Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 4.221
Filtrar
Mais filtros

Intervalo de ano de publicação
1.
J Virol ; 98(3): e0183823, 2024 Mar 19.
Artigo em Inglês | MEDLINE | ID: mdl-38426726

RESUMO

Nipah virus (NiV) is a highly lethal, zoonotic Henipavirus (HNV) that causes respiratory and neurological signs and symptoms in humans. Similar to other paramyxoviruses, HNVs mediate entry into host cells through the concerted actions of two surface glycoproteins: a receptor-binding protein (RBP) that mediates attachment and a fusion glycoprotein (F) that triggers fusion in an RBP-dependent manner. NiV uses ephrin-B2 (EFNB2) and ephrin-B3 (EFNB3) as entry receptors. Ghana virus (GhV), a novel HNV identified in a Ghanaian bat, uses EFNB2 but not EFNB3. In this study, we employ a structure-informed approach to identify receptor-interfacing residues and systematically introduce GhV-RBP residues into a NiV-RBP backbone to uncover the molecular determinants of EFNB3 usage. We reveal two regions that severely impair EFNB3 binding by NiV-RBP and EFNB3-mediated entry by NiV pseudotyped viral particles. Further analyses uncovered two-point mutations (NiVN557SGhV and NiVY581TGhV) pivotal for this phenotype. Moreover, we identify NiV interaction with Y120 of EFNB3 as important for the usage of this receptor. Beyond these EFNB3-related findings, we reveal two domains that restrict GhV binding of EFNB2, confirm the HNV-head as an immunodominant target for polyclonal and monoclonal antibodies, and describe putative epitopes for GhV- and NiV-specific monoclonal antibodies. Cumulatively, the work presented here generates useful reagents and tools that shed insight to residues important for NiV usage of EFNB3, reveal regions critical for GhV binding of EFNB2, and describe putative HNV antibody-binding epitopes. IMPORTANCE: Hendra virus and Nipah virus (NiV) are lethal, zoonotic Henipaviruses (HNVs) that cause respiratory and neurological clinical features in humans. Since their initial outbreaks in the 1990s, several novel HNVs have been discovered worldwide, including Ghana virus. Additionally, there is serological evidence of zoonotic transmission, lending way to concerns about future outbreaks. HNV infection of cells is mediated by the receptor-binding protein (RBP) and the Fusion protein (F). The work presented here identifies NiV RBP amino acids important for the usage of ephrin-B3 (EFNB3), a receptor highly expressed in neurons and predicted to be important for neurological clinical features caused by NiV. This study also characterizes epitopes recognized by antibodies against divergent HNV RBPs. Together, this sheds insight to amino acids critical for HNV receptor usage and antibody binding, which is valuable for future studies investigating determinants of viral pathogenesis and developing antibody therapies.


Assuntos
Infecções por Henipavirus , Henipavirus , Receptores Virais , Humanos , Aminoácidos/genética , Anticorpos Monoclonais/metabolismo , Proteínas de Transporte/metabolismo , Efrina-B3/genética , Efrina-B3/química , Efrina-B3/metabolismo , Epitopos/genética , Epitopos/metabolismo , Gana , Vírus Hendra/metabolismo , Henipavirus/classificação , Henipavirus/genética , Henipavirus/metabolismo , Mutagênese , Vírus Nipah/metabolismo , Proteínas do Envelope Viral/genética , Internalização do Vírus , Receptores Virais/metabolismo
2.
J Infect Dis ; 229(1): 203-213, 2024 Jan 12.
Artigo em Inglês | MEDLINE | ID: mdl-37804095

RESUMO

Members of the Plasmodium falciparum erythrocyte membrane protein 1 (PfEMP1) family are important targets for protective immunity. Abnormal display of PfEMP1 on the surfaces of infected erythrocytes (IEs) and reduced cytoadhesion have been demonstrated in hemoglobin (Hb) AS and HbAC, inherited blood disorders associated with protection against severe P. falciparum malaria. We found that Ghanaian children with HbAS had lower levels of immunoglobulin G against several PfEMP1 variants and that this reactivity increased more slowly with age than in their HbAA counterparts. Moreover, children with HbAS have lower total parasite biomass than those with HbAA at comparable peripheral parasitemias, suggesting impaired cytoadhesion of HbAS IEs in vivo and likely explaining the slower acquisition of PfEMP1-specific immunoglobulin G in this group. In contrast, the function of acquired antibodies was comparable among Hb groups and appears to be intact and sufficient to control parasitemia via opsonization and phagocytosis of IEs.


Assuntos
Hemoglobina Falciforme , Malária Falciparum , Criança , Humanos , Hemoglobina Falciforme/metabolismo , Plasmodium falciparum , Malária Falciparum/parasitologia , Gana , Proteínas de Protozoários , Eritrócitos/parasitologia , Imunoglobulina G , Anticorpos Antiprotozoários , Proteínas de Membrana/metabolismo
3.
Emerg Infect Dis ; 30(3): 605-608, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38316032

RESUMO

The invasive Anopheles stephensi mosquito has rapidly expanded in range in Africa over the past decade. Consistent with World Health Organization guidelines, routine entomologic surveillance of malaria vectors in Accra, Ghana, now includes morphologic and molecular surveillance of An. stephensi mosquitoes. We report detection of An. stephensi mosquitoes in Ghana.


Assuntos
Anopheles , Malária , Animais , Gana/epidemiologia , Mosquitos Vetores , Malária/epidemiologia
4.
BMC Cancer ; 24(1): 920, 2024 Jul 30.
Artigo em Inglês | MEDLINE | ID: mdl-39080553

RESUMO

BACKGROUND: The two major causes of cancer-related deaths among women in Ghana are breast cancer (BC) and cervical cancer (CC). These types of cancers typically do not show any symptoms until they have progressed. Therefore, it is important to screen for early detection. This research aimed to investigate the rate of breast cancer and cervical cancer screening, as well as the factors associated with it, among women of reproductive age in Ghana. METHODS: This study analysed data from the 2022 Ghana Demographic and Health Survey. A total of 15,014 women aged 15 to 49 years were included in the analysis. Descriptive statistics and binary logistic regression were employed to analyse the data with the aid of STATA/SE, version 17. RESULTS: It was found that 18.4% and 5.0% of the women had screened for BC and CC, respectively. Women aged 45-49 years were about three times more likely (aOR = 2.83, 95% CI: 1.88-4.24) to screen for BC compared to those aged 15-19 years. Women who had tested for HIV had increased odds (aOR = 1.88, 95% CI: 1.56-2.25) of screening for BC compared to their counterparts. Women within the richest wealth index (aOR = 1.95, 95% CI: 1.40-2.72) had increased odds of screening for BC compared to those in the poorest wealth index. Regarding CC screening, women with higher education (aOR = 2.56, 95% CI: 1.53-4.29) were two times more likely to screen for CC compared to those with no formal education. Women who did not use tobacco (aOR = 0.45, 95% CI: 0.21-0.96) had decreased odds of CC screening compared to their counterparts. CONCLUSIONS: This study showed that the uptake of BC and CC screening services among women in Ghana was very low. The drivers of BC and CC screening included enabling, predisposing, and need factors. Stakeholders can leverage the mass media to raise awareness and educate women in reproductive age about the importance of BC and CC screening. This study provides relevant information that can inform BC and CC policies and programmes in Ghana.


Assuntos
Neoplasias da Mama , Detecção Precoce de Câncer , Inquéritos Epidemiológicos , Neoplasias do Colo do Útero , Humanos , Feminino , Neoplasias do Colo do Útero/diagnóstico , Neoplasias do Colo do Útero/epidemiologia , Adulto , Gana/epidemiologia , Pessoa de Meia-Idade , Detecção Precoce de Câncer/estatística & dados numéricos , Adolescente , Neoplasias da Mama/epidemiologia , Neoplasias da Mama/diagnóstico , Adulto Jovem , Programas de Rastreamento/estatística & dados numéricos , Fatores Socioeconômicos
5.
Trop Med Int Health ; 29(6): 477-488, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38599337

RESUMO

INTRODUCTION: Scabies is an underdiagnosed skin infestation caused by the Sarcoptes scabiei mite. The infection causes severe itching and a skin rash but can be effectively treated using topical or systemic drugs. Scabies outbreaks are commonly reported in resource-poor countries, including Ghana. Traditional healers play an important role in primary care in rural areas. The role of these traditional healers in the management of scabies has so far not been explored. The aim of this study was therefore to investigate the perceptions of traditional healers regarding the causation and management of scabies. METHODS: A phenomenological qualitative approach was employed. Traditional healers in the Asante Akim North and Central districts in Ghana were approached with an interview request. Using a semi-structured interview protocol, 15 traditional healers were interviewed. The results were coded and analysed, after which seven themes were extrapolated. RESULTS: Scabies infections were frequently reported by traditional healers. Itching and skin rash were unanimously regarded as the major symptoms of scabies. The majority acknowledged the infectious nature of scabies, but no participant reported the causative organism. A dichotomous disease classification was noted, consisting of 'natural' and 'spiritual' variants each with a unique disease profile and management requirements, as reported by the traditional healers. All but two traditional healers reported to treat scabies using almost exclusively herbs and spiritual rituals. CONCLUSION: The majority of traditional healers were open to collaboration with allopathic healthcare providers. Collaboration could broaden the primary care network in rural areas, but mistrust and lack of transparency form potential barriers to collaboration. We, therefore, emphasise the need for additional efforts to investigate strategies for future collaboration.


Assuntos
Conhecimentos, Atitudes e Prática em Saúde , Medicinas Tradicionais Africanas , Escabiose , Escabiose/tratamento farmacológico , Humanos , Gana , Feminino , Masculino , Adulto , Pessoa de Meia-Idade , Pesquisa Qualitativa , Animais , Entrevistas como Assunto , Percepção , Profissionais de Medicina Tradicional
6.
Trop Med Int Health ; 29(3): 206-213, 2024 03.
Artigo em Inglês | MEDLINE | ID: mdl-38093593

RESUMO

BACKGROUND: Healthcare resources are often limited in areas of sub-Saharan Africa. This makes accurate and timely diagnoses challenging and delays treatment of childhood febrile illness. We explored longitudinal characteristics related to symptoms, diagnosis and treatment of hospitalised febrile children in a rural area of Ghana highly endemic for malaria. METHODS: Febrile children under 15 years, admitted to the study hospital paediatric ward, were recruited to the study and clinical data were collected throughout hospitalisation. Descriptive statistics were reported for all cases; for longitudinal analyses, a subset of visits with limited missing data was used. RESULTS: There were 801 hospitalised children included in longitudinal analyses. Malaria (n = 581, 73%) and sepsis (n = 373, 47%) were the most prevalent suspected diagnoses on admission. One-third of malaria suspected diagnoses (n = 192, 33%) were changed on the discharge diagnosis, compared to 84% (n = 315) of sepsis suspected diagnoses. Among malaria-only discharge diagnoses, 98% (n/N = 202/207) received an antimalarial and 33% (n/N = 69/207) an antibiotic; among discharge diagnoses without malaria, 28% (n/N = 108/389) received an antimalarial and 83% (n/N = 324/389) an antibiotic. CONCLUSIONS: Suspected diagnoses were largely based on clinical presentation and were frequently changed; changed diagnoses were associated with lingering symptoms, underscoring the need for faster and more accurate diagnostics. Medications were over-prescribed regardless of diagnosis stability, possibly because of a lack of confidence in suspected diagnoses. Thus, better diagnostic tools are needed for childhood febrile illnesses to enhance the accuracy of and confidence in diagnoses, and to cut down unjustified medication use, reducing the risk of antimicrobial and malaria resistance.


Assuntos
Antimaláricos , Malária , Sepse , Criança , Humanos , Lactente , Antimaláricos/uso terapêutico , Gana/epidemiologia , Febre/diagnóstico , Febre/etiologia , Febre/tratamento farmacológico , Malária/diagnóstico , Malária/tratamento farmacológico , Malária/epidemiologia , Antibacterianos/uso terapêutico , Hospitais , Sepse/diagnóstico , Sepse/tratamento farmacológico , Sepse/epidemiologia
7.
Malar J ; 23(1): 238, 2024 Aug 10.
Artigo em Inglês | MEDLINE | ID: mdl-39127692

RESUMO

BACKGROUND: Insecticide-treated nets (ITNs) are pivotal tools for malaria prevention in endemic regions like Ghana. Understanding the protective factors and barriers influencing ITN ownership and usage is crucial for designing effective interventions. A scoping review was conducted to identify studies exploring protective factors and barriers related to ITN ownership and usage. METHODS: This review followed the guidelines by Askey and O'Malley. Search was done in four major databases including PubMed, Science Direct, PubMed CENTRAL, and JSTOR. Additional searches were done in Google Scholar and Google. Peer-reviewed and grey literature were included. RESULTS: A total of 24 papers met the eligibility criteria and were included in the review. Included studies found regional disparities in ITN ownership and usage. Furthermore, included studies reported ownership rates between 97.8 and 28% and usage rates between 94 and 20%. Protective factors facilitating ITN ownership were marital status, higher educational attainment, higher income levels, and being aged 25 years or older. In contrast, the factors for its use included community-level campaigns advocating for ITN use and awareness, individuals with secondary education or higher and those residing in urban areas. Missed opportunities in free distribution exercises and the unavailability of subsidized ITNs at health facilities were barriers to ownership. CONCLUSION: Understanding and addressing protective factors and barriers influencing ITN ownership and usage are crucial for enhancing malaria prevention strategies and achieving sustainable progress in combating malaria in endemic areas. Collaborative and evidence-based interventions are essential for addressing these challenges effectively.


Assuntos
Mosquiteiros Tratados com Inseticida , Malária , Controle de Mosquitos , Propriedade , Gana , Mosquiteiros Tratados com Inseticida/estatística & dados numéricos , Propriedade/estatística & dados numéricos , Malária/prevenção & controle , Controle de Mosquitos/estatística & dados numéricos , Controle de Mosquitos/métodos , Humanos
8.
Malar J ; 23(1): 40, 2024 Feb 05.
Artigo em Inglês | MEDLINE | ID: mdl-38317164

RESUMO

BACKGROUND: Artemisinin-based combination therapy (ACT) has been effective in the supervised treatment of uncomplicated malaria in Ghana. Since ACT usage is primarily unsupervised, this study aimed to determine the effectiveness of artemether-lumefantrine (AL) for treating malaria patients in two transmission settings in Ghana. METHODS: Eighty-four individuals with uncomplicated Plasmodium falciparum malaria were recruited from Lekma Hospital (LH) in Accra (low-transmission area; N = 28), southern Ghana, and King's Medical Centre (KMC) in Kumbungu (high-transmission area; N = 56), northern Ghana. Participants were followed up for 28 days after unsupervised treatment with AL. The presence of asexual parasites was determined by microscopic examination of Giemsa-stained blood smears. Plasmodium species identification was confirmed using species-specific primers targeting the 18S rRNA gene. Parasite recrudescence or reinfection was determined by genotyping the Pfmsp 1 and Pfmsp 2 genes. RESULTS: After AL treatment, 3.6% (2/56) of the patients from KMC were parasitaemic on day 3 compared to none from the LH patients. One patient from KMC with delayed parasite clearance on day 3 remained parasite-positive by microscopy on day 7 but was parasite-free by day 14. While none of the patients from LH experienced parasite recurrence during the 28-day follow-up, three and two patients from KMC had recurrent parasitaemia on days 21 and 28, respectively. Percentage reduction in parasite densities from day 1, 2, and 3 for participants from the KMC was 63.2%, 89.5%, and 84.5%. Parasite densities for participants from the LH reduced from 98.2%, 99.8% on day 1, and 2 to 100% on day 3. The 28-day cumulative incidence rate of treatment failure for KMC was 12.8% (95% confidence interval: 1.9-23.7%), while the per-protocol effectiveness of AL in KMC was 89.47%. All recurrent cases were assigned to recrudescence after parasite genotyping by Pfmsp 1 and Pfmsp 2. CONCLUSION: While AL is efficacious in treating uncomplicated malaria in Ghana, when taken under unsupervised conditions, it showed an 89.4% PCR-corrected cure rate in northern Ghana, which is slightly below the WHO-defined threshold.


Assuntos
Antimaláricos , Artemisininas , Malária Falciparum , Humanos , Combinação Arteméter e Lumefantrina/uso terapêutico , Antimaláricos/uso terapêutico , Gana , Artemisininas/uso terapêutico , Combinação de Medicamentos , Artemeter/uso terapêutico , Malária Falciparum/tratamento farmacológico , Recidiva , Parasitemia/tratamento farmacológico , Etanolaminas/uso terapêutico , Fluorenos/uso terapêutico , Plasmodium falciparum/genética
9.
Malar J ; 23(1): 230, 2024 Aug 04.
Artigo em Inglês | MEDLINE | ID: mdl-39097728

RESUMO

BACKGROUND: Ghana is a malaria-endemic country with the entire population at risk. The Northern region of the country recorded the highest malaria case fatality rate (CFR) for two consecutive years: 1.11% in 2013 and 1.07% in 2014. Even though the National Malaria Elimination Programme (NMEP) has achieved a reduction in malaria mortality, the existence of high case fatality in the Northern region was alarming. This study, therefore, aimed to determine the factors associated with malaria mortality in the northern region of Ghana to institute control measures. METHODS: An unmatched case control study was conducted from July 2015 to August 2015. The study population consisted of patients admitted to health facilities for severe malaria in the Northern region of Ghana. A case was defined as a patient diagnosed with severe malaria at an eligible health facility who died as a result of malaria. A control was a patient diagnosed with severe malaria admitted to an eligible health facility who did not die. Health facilities that recorded CFRs of 1.0% and above were randomly sampled for this study, after which, 10 cases and 20 controls were recruited from each health facility. Information on cases and controls was then abstracted from hospital records using an electronically deployed abstraction tool. Continuous variables were expressed as means and medians, and categorical variables as frequencies and proportions. Multivariable logistic regression was used to assess the strength of the association between malaria mortality and factors predictive of malaria mortality. A p-value of < 0.05 was considered statistically significant. RESULTS: In all, a total of 95 cases and 190 controls participated in this study. The median ages of cases and controls were 4.1 years (IQR = 21.6) and 5.7 years (IQR = 18.2), respectively. Fifty-four (56.8%) cases were females, while 93 (49.0%) of the controls were females. Factors associated with malaria mortality included: duration of hospital stay less than 24 h [aOR: 12.0, 95% CI (5.9-24.6)], severe pallor [aOR: 2.3, 95% CI (1.1-4.6)], children under 5 years [aOR: 2.8, 95% CI (1.4-5.6)], oral Artesunate/Amodiaquine administration [aOR: 0.4, 95% CI (0.2-0.9)] and sepsis as an additional diagnosis [aOR: 4.1, 95% CI (1.8-9.5)]. CONCLUSION: Predictors of malaria mortality in the Northern region include children under 5 years, severe pallor, sepsis as an additional diagnosis, and use of oral anti-malarial. Patients with severe pallor and sepsis as co-morbidities should receive proactive management. The NMEP and its partners should implement measures to strengthen the referral system, anaemia prevention and management, and retrain health workers on malaria case management. Malaria control interventions targeted at under five children in the region should be reviewed and enhanced.


Assuntos
Malária , Humanos , Gana/epidemiologia , Estudos de Casos e Controles , Feminino , Masculino , Malária/mortalidade , Adulto , Adolescente , Adulto Jovem , Pessoa de Meia-Idade , Pré-Escolar , Criança , Lactente , Idoso , Fatores Sociodemográficos , Fatores de Risco , Fatores Socioeconômicos
10.
Malar J ; 23(1): 12, 2024 Jan 09.
Artigo em Inglês | MEDLINE | ID: mdl-38195484

RESUMO

BACKGROUND: Clothianidin, an insecticide with a novel mode of action, has been deployed in the annual indoor residual spraying programme in northern Ghana since March 2021. To inform pragmatic management strategies and guide future studies, baseline data on local Anopheles gambiae sensu lato (s.l.) susceptibility to the clothianidin insecticide were collected in Kpalsogu, a village in the Northern region, Ghana. METHODS: Phenotypic susceptibility of An. gambiae mosquitoes to clothianidin was assessed using the World Health Organization (WHO) insecticide resistance monitoring bioassay. The WHO cone bioassays were conducted on mud and cement walls sprayed with Sumishield 50 wettable granules (WG) (with clothianidin active ingredient). Daily mortalities were recorded for up to 7 days to observe for delayed mortalities. Polymerase chain reaction (PCR) technique was used to differentiate the sibling species of the An. gambiae complex and also for the detection of knock down resistance genes (kdr) and the insensitive acetylcholinesterase mutation (ace-1). RESULTS: The WHO susceptibility bioassay revealed a delayed killing effect of clothianidin. Mosquitoes exposed to the cone bioassays for 5 min died 120 h after exposure. Slightly higher mortalities were observed in mosquitoes exposed to clothianidin-treated cement wall surfaces than mosquitoes exposed to mud wall surfaces. The kdr target-site mutation L1014F occurred at very high frequencies (0.89-0.94) across all vector species identified whereas the ace-1 mutation occurred at moderate levels (0.32-0.44). Anopheles gambiae sensu stricto was the most abundant species observed at 63%, whereas Anopheles arabiensis was the least observed at 9%. CONCLUSIONS: Anopheles gambiae s.l. mosquitoes in northern Ghana were susceptible to clothianidin. They harboured kdr mutations at high frequencies. The ace-1 mutation occurred in moderation. The results of this study confirm that clothianidin is an effective active ingredient and should be utilized in malaria vector control interventions.


Assuntos
Anopheles , Inseticidas , Malária , Animais , Anopheles/genética , Inseticidas/farmacologia , Acetilcolinesterase , Gana , Mosquitos Vetores
11.
Malar J ; 23(1): 142, 2024 May 12.
Artigo em Inglês | MEDLINE | ID: mdl-38734664

RESUMO

BACKGROUND: The newly developed malaria vaccine called "R21/Matrix-M malaria vaccine" showed a high safety and efficacy level, and Ghana is the first country to approve this new vaccine. The present study aimed to evaluate the rate of vaccine hesitancy (VH) towards the newly developed malaria vaccine among parents who currently have children who are not eligible for the vaccine but may be eligible in the near future. Additionally, the study aimed to identify the factors that could potentially influence VH. METHODS: A cross-sectional survey using both online-based questionnaires and face-to-face interviews was conducted in Ghana from June to August 2023. The survey specifically targeted parents of ineligible children for vaccination, including those aged less than 5 months or between 3 and 12 years. The Parent Attitudes about Childhood Vaccination (PACV) scale was used to assess parental VH. RESULTS: A total of 765 people participated in this study. Their median age was 36.0 years with an interquartile range of 31.0-41.0 years, 67.7% were females, 41.8% completed their tertiary education, 63.3% were married, 81.6% worked in non-healthcare sectors, and 59.7% reported that their monthly income was insufficient. About one-third (34.5%) of the parents were hesitant to give their children the R21/Matrix-M malaria vaccine. The following predictors were associated with VH: working in the healthcare sector (adjusted odds ratio (AOR) = 0.50; 95% confidence interval (CI) 0.30-0.80; p = 0.005), having the other parent working in the healthcare sector (AOR = 0.54; 95% CI 0.30-0.94; p = 0.034), and not taking scheduled routine vaccinations (AOR = 1.90; 95% CI 1.27-2.84; p = 0.002). CONCLUSIONS: Addressing VH is crucial for optimizing R21/Matrix-M vaccine coverage in Ghana's malaria control strategy. By tackling VH issues, Ghana can effectively safeguard children's health in malaria-prone areas.


Assuntos
Vacinas Antimaláricas , Pais , Humanos , Gana , Estudos Transversais , Feminino , Masculino , Vacinas Antimaláricas/administração & dosagem , Adulto , Pais/psicologia , Pré-Escolar , Criança , Hesitação Vacinal/estatística & dados numéricos , Hesitação Vacinal/psicologia , Lactente , Inquéritos e Questionários , Vacinação/estatística & dados numéricos , Vacinação/psicologia , Malária/prevenção & controle , Pessoa de Meia-Idade
12.
Med Mycol ; 62(3)2024 Mar 07.
Artigo em Inglês | MEDLINE | ID: mdl-38383897

RESUMO

In Ghana, most laboratory diagnoses of severe mycoses are based on histopathology findings due to inadequate availability of serology, culture, and molecular tests. The aim of this study was to evaluate the spectrum of mycoses diagnosed in Ghana. We retrospectively reviewed reports from 2012 to 2021 from three major pathology laboratories in Ghana to identify reports indicating the presence of fungal elements and diagnosis of a mycosis, then extracted demographic, clinical history, site of infection, stain(s), used and diagnosed mycosis details. Over the 10-year period, 107 cases were found. No apparent increasing and decreasing trend in the number of cases per year or in a period was observed. The age range of affected patients was from 4 to 86 years. Special stains for fungi were only used in 22 of 107 (20.6%) of cases. The most frequently affected site was the sino-nasal area (34%). Mycosis type was determined for 58 (54.2%) cases, comprising aspergillosis (21), candidiasis (14), dermatophytosis (6), mucormycosis (3), two cases each of chromoblastomycosis, histoplasmosis, eumycetoma, entomophthoromycosis, sporotrichosis, and Malassezia infection and a single case each of cryptococcosis and deep onychomycosis. Of the 53 (49.5%) cases with presumptive diagnosis data, only seven (13.2%) had a pre-biopsy suspicion of mycosis. There is a wide spectrum of mycoses in Ghana, including endemic mycoses not previously reported. Improving the use of special fungal stains could increase yield and mycoses identification. Laboratory diagnostic capacity needs enhancement to complement histopathology investigations with serology, culture, and molecular methods.


In Ghana, diagnosis of mycoses is mainly based on histopathology findings. To appreciate the varied mycoses diagnosed, we reviewed the reports of major laboratories from 2012 to 2021 and found 107 cases including endemic, rare, and previously unreported cases with fungal stains unusually used.


Assuntos
Aspergilose , Histoplasmose , Micoses , Humanos , Pré-Escolar , Criança , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Estudos Retrospectivos , Gana/epidemiologia , Micoses/patologia , Micoses/veterinária , Aspergilose/veterinária , Histoplasmose/veterinária
13.
Br J Nutr ; 131(4): 707-719, 2024 02 28.
Artigo em Inglês | MEDLINE | ID: mdl-37795629

RESUMO

Adolescent girls are an important target group for micronutrient interventions particularly in Sub-Saharan Africa where adolescent pregnancy and micronutrient deficiencies are common. When consumed in sufficient amounts and at levels appropriate for the population, fortified foods may be a useful strategy for this group, but little is known about their effectiveness and timing (regarding menarche), particularly in resource-poor environments. We evaluated the effect of consuming multiple micronutrient-fortified biscuits (MMB), sold in the Ghanaian market, 5 d/week for 26 weeks compared with unfortified biscuits (UB) on the micronutrient status of female adolescents. We also explored to what extent the intervention effect varied before or after menarche. Ten2Twenty-Ghana was a 26-week double-blind, randomised controlled trial among adolescent girls aged 10-17 years (n 621) in the Mion District, Ghana. Biomarkers of micronutrient status included concentrations of Hb, plasma ferritin (PF), soluble transferrin receptor (TfR) and retinol-binding protein (RBP), including body-iron stores. Intention-to-treat analysis was supplemented by protocol-specific analysis. We found no effect of the intervention on PF, TfR and RBP. MMB consumption did not affect anaemia and micronutrient deficiencies at the population level. MMB consumption increased the prevalence of vitamin A deficiency by 6·2 % (95 % CI (0·7, 11·6)) among pre-menarche girls when adjusted for baseline micronutrient status, age and height-for-age Z-score, but it decreased the prevalence of deficient/low vitamin A status by -9·6 % (95 % CI (-18·9, -0·3)) among post-menarche girls. Consuming MMB available in the market did not increase iron status in our study, but reduced the prevalence of deficient/low vitamin A status in post-menarcheal girls.


Assuntos
Anemia Ferropriva , Desnutrição , Oligoelementos , Adolescente , Feminino , Humanos , Gravidez , Anemia Ferropriva/epidemiologia , Anemia Ferropriva/prevenção & controle , Ferritinas , Alimentos Fortificados/análise , Gana/epidemiologia , Ferro , Micronutrientes , Estado Nutricional , Vitamina A , Criança
14.
AIDS Care ; 36(1): 139-145, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37723120

RESUMO

Antiretroviral therapy (ART) adherence during and after pregnancy is essential to reduce perinatal transmission of HIV. However, little is known about adherence during the intrapartum and early postpartum inpatient hospital stay. Using secondary data from a hospital-based cohort study focused on the relationship between birthweight and engagement in HIV care, we examined the magnitude of, reasons for, and factors associated with incomplete intrapartum and early postpartum ART adherence among adult women (18 years or older) living with HIV who delivered within the previous two weeks at one of five hospitals in Accra, Ghana. Of the 142 enrolled participants who had complete adherence data and reported being on ART at the time of hospital admission, 43% (61/142) reported missing at least one ART dose during labor, delivery, and postpartum, including almost 20% (28/142) missing 2 or more consecutive doses. Women who reported frequently missing ART doses during pregnancy had higher odds of reporting missed doses during their intrapartum and postpartum hospital stays. Among those with inpatient ART interruption, the most frequently cited reasons were: forgetting medication at home (42%) and challenges of being in or recovering from labor (29%). Maternal perception of infant health at birth, hospital level of care, and frequency of missing HIV medications during pregnancy were associated with incomplete ART adherence during the intrapartum and early postpartum inpatient stay. An enabling clinical environment to facilitate access to ART during inpatient stays may have positive implications for ART adherence.


Assuntos
Fármacos Anti-HIV , Infecções por HIV , Complicações Infecciosas na Gravidez , Gravidez , Adulto , Recém-Nascido , Lactente , Feminino , Humanos , Infecções por HIV/complicações , Estudos de Coortes , Complicações Infecciosas na Gravidez/tratamento farmacológico , Transmissão Vertical de Doenças Infecciosas , Gana , Pacientes Internados , Período Pós-Parto , Antirretrovirais/uso terapêutico , Adesão à Medicação , Hospitais , Fármacos Anti-HIV/uso terapêutico
15.
AIDS Care ; : 1-9, 2024 Jan 07.
Artigo em Inglês | MEDLINE | ID: mdl-38184890

RESUMO

ABSTRACTAdolescents and young adults (young people) with HIV (YPWH) often struggle with treatment self-management. Many have symptoms due to HIV disease, medication side-effects, or comorbid conditions. Our study investigated the severity of HIV-related symptoms among YPWH aged 18-24 with detectable viral loads from an HIV clinic in Ghana (N = 60) and potential correlates of severity across a range of factors. Results indicated that YPWH currently experienced, on average, 13 symptoms (SD = 12.33). Six of the 10 most common symptoms were from two domains: fatigue and psychological. The most common symptoms were headaches (62%), weakness (53%), and fear/worries (52%). No differences were observed in number or severity of symptoms between youth based on HIV transmission status. Bivariate correlates of symptom severity were found with six that remained significant or approached significance in a multivariate model predicting severity: living with a parent/guardian, higher perceived access to HIV care, and higher treatment readiness were associated with lower severity while greater travel time to the HIV clinic, psychological distress, and more missed clinic appointments were associated with higher severity. Our findings suggest that interventions to address symptoms among YPWH should be multilevel and include strategies (e.g., telehealth, home care) to increase access to care.

16.
AIDS Care ; 36(7): 1018-1028, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38320008

RESUMO

This study examines the prevalence and risk factors of physical, sexual, psychological, and economic violence during lockdowns associated with COVID-19 among HIV-positive women in Ghana. Data were collected in August 2021 from a cross-section of 538 HIV-positive women aged 18 years and older in the Lower Manya Krobo District in the Eastern region of Ghana. Logit models were used to explore relationships between women's self-reported experiences of physical, sexual, psychological /emotional, and economic violence under lockdown and key socio-economic and demographic characteristics. The findings indicate moderate to high prevalence of intimate partner violence (IPV) under lockdown in our sample: physical violence (30.1%), sexual violence (28.6%), emotional/psychological violence (53.7%), and economic violence (54.2%). IPV was higher on all four measures for educated women, poorer women, employed women, cohabiting and married women, and HIV seroconcordant couples.


Assuntos
COVID-19 , Infecções por HIV , Violência por Parceiro Íntimo , SARS-CoV-2 , Humanos , Feminino , Gana/epidemiologia , Violência por Parceiro Íntimo/estatística & dados numéricos , Violência por Parceiro Íntimo/psicologia , COVID-19/epidemiologia , COVID-19/psicologia , COVID-19/prevenção & controle , Adulto , Infecções por HIV/epidemiologia , Infecções por HIV/psicologia , Pessoa de Meia-Idade , Prevalência , Fatores de Risco , Estudos Transversais , Adulto Jovem , Adolescente , Pandemias , Fatores Socioeconômicos
17.
BMC Infect Dis ; 24(1): 349, 2024 Mar 26.
Artigo em Inglês | MEDLINE | ID: mdl-38528449

RESUMO

INTRODUCTION: Skin diseases such as impetigo pose a significant public health challenge in low resource settings. Despite this, there is a dearth of epidemiological data on the prevalence of this condition in Ghana. METHODS: We conducted a cross sectional study in three settings in Ghana: community members in East Mamprusi district in the North East region, a secondary school in Sekyere East district, and inmates of the Kumasi central prisons both in the Ashanti region. Following a period of training, we performed a standardised skin examination on each participant to assess for scabies and impetigo. We calculated the prevalence of each skin condition and investigated determinants of impetigo. RESULTS/ FINDINGS: Of the 1327 participants [males 64.1% and median age 22 (16-29) years], 746 (56.2%) had scabies and 186 (14%) had impetigo which was usually very mild or mild in severity. Most participants with impetigo also had scabies (161/186, 86.6%). Having an itch [RR 6.05 (95% CI 2.53-14.47)], presence of scabies burrows [RR 1.99 (95% CI 1.54-2.59)], clinical scabies [RR 3.15 (2.11-4.72)] or being in preschool [RR 4.56 (1.78-11.67)] increased the risk for impetigo. A combination of the presence of clinical scabies, age, sex and itch most accurately predicted the odds of having impetigo. CONCLUSIONS: There is substantial burden of impetigo and scabies in Ghana. There is a need to institute measures to improve detection and control of these common dermatoses as part of Universal Health Coverage package to reduce the scourge of the diseases in this setting.


Assuntos
Impetigo , Escabiose , Pré-Escolar , Masculino , Humanos , Adulto Jovem , Adulto , Impetigo/epidemiologia , Estudos Transversais , Escabiose/epidemiologia , Prevalência , Gana/epidemiologia
18.
BMC Infect Dis ; 24(1): 507, 2024 May 21.
Artigo em Inglês | MEDLINE | ID: mdl-38773445

RESUMO

INTRODUCTION: Human immunodeficiency virus (HIV) remains a significant health challenge affecting many people including those from sub-Saharan Africa (SSA). Even though HIV can be transmitted through various means, mother-to-child transmission (MTCT) remains the major route of transmission in children under the age of five. This study examined the correlates of knowledge of HIV transmission during pregnancy among reproductive-age women in Ghana. METHODS: Data for this study were obtained from the 2014 Ghana Demographic and Health Survey. The sample consisted of 9,106 women aged 15 to 49 years. We conducted both descriptive and multivariable logistic regression analyses to determine the prevalence and factors associated with knowledge of HIV transmission during pregnancy. The results were presented using frequencies, percentages, and adjusted odds ratios (aOR) with their corresponding 95% confidence intervals (CI). RESULTS: Approximately, 69.41% of women of reproductive age knew of HIV transmission during pregnancy. Women who had two (aOR = 1.32, 95% CI [1.01, 1.72]) or three (aOR = 1.37, 95% CI [1.07, 1.76]) births were more knowledgeable of HIV transmission during pregnancy. Women who read the newspaper (aOR = 1.56, 95% CI [1.31, 1.86]), listened to the radio (aOR = 1.23, 95% CI [1.05, 1.45]), lived in rural areas (aOR = 1.30, 95% CI [1.09, 1.54]) or ever been tested for HIV (aOR = 1.20, 95% CI [1.05, 1.37]) were more likely to be knowledgeable of HIV transmission during pregnancy than their counterparts in the reference categories. Compared to those in the Western Region, women in the Upper East (aOR = 0.45, 95% CI [0.32, 0.63]), Upper West (aOR = 0.54, 95% CI [0.35, 0.85]), Ashanti (aOR = 0.75, 95% CI [0.58, 0.97]) and Greater Accra Regions (aOR = 0.74, 95% CI [0.56, 0.98]) were less knowledgeable of HIV transmission during pregnancy. CONCLUSIONS: The study highlights a gap in the knowledge of HIV transmission during pregnancy among women in Ghana. Continuous public education is required to educate women on HIV transmission from mothers to their children during pregnancy and how this may be interrupted. Such programs should involve the use of the media and take into consideration the demographic and geographic characteristics highlighted as determinants in this study. This will ultimately contribute to the reduction of MTCT of HIV in Ghana.


Assuntos
Infecções por HIV , Conhecimentos, Atitudes e Prática em Saúde , Complicações Infecciosas na Gravidez , Humanos , Feminino , Gravidez , Gana/epidemiologia , Adulto , Infecções por HIV/transmissão , Infecções por HIV/epidemiologia , Adolescente , Adulto Jovem , Pessoa de Meia-Idade , Complicações Infecciosas na Gravidez/virologia , Complicações Infecciosas na Gravidez/epidemiologia , Transmissão Vertical de Doenças Infecciosas/estatística & dados numéricos , Estudos Transversais , Prevalência
19.
BMC Infect Dis ; 24(1): 356, 2024 Mar 27.
Artigo em Inglês | MEDLINE | ID: mdl-38539128

RESUMO

BACKGROUND: The burden of cervical cancer in Ghana is high due to a lack of a national screening and vaccination program. Geographical variations in high-risk Human Papilloma Virus incidence and type should be considered for vaccine improvement and screening in LMICs. METHODS: A descriptive, multi-center cross-sectional study with purposive sampling of cases with cervical cancer diagnosed from January 2012 through to December 2018 was employed relying on archived Formalin Fixed Paraffin Embedded (FFPE) tissues from four (4) Teaching Hospitals. Cervical cancers were assessed for histopathological features following WHO guidelines. In addition, the novel Tumour Budding and Nest Size Grade (TBNS) for SCC, SILVA pattern of invasion for EAC and Tumour Infiltrating Lymphocytes (TILs) were assessed. High Risk HPV testing was performed using an isothermal, multiplex nucleic acid amplification method from ATILA biosystem (Mountain View California, USA). The FFPE blocks were tested for 15 hrHPV genotypes. Results were analyzed using SPSS v.26.0, with descriptive statistics and cross-tabulation and chi-square tests done with significance established at p < 0.05. RESULTS: A total of 297 cases were identified for the study with ages ranging from 20 to 95 years. The peak age group for cervical cancer was 46 to 55 years. For those tested, hrHPV positivity rate was 85.4% [EAC (84.6%) and SCC (85.6%)]. The top five hrHPV serotypes for both histological cancers were 59 (40.0%), 35 (32.0%), 18 (30.0%), 16 (15.0%), and 33 (10.0%) respectively. Approximately, 58.2% of infections were multiple. Single hrHPV infections were mostly caused by hrHPV 59 (28.9%), and 16 (26.3%). TBNS grade for SCC, SILVA pattern of invasion for EAC and TILs did not show any statistically significant relationship with hrHPV. CONCLUSION: We affirm reported differences in hrHPV types associated with cervical cancer in Ghana with hrHPV types such as 59, 35, and 33 forming a significant proportion of hrHPV types associated with cervical cancer. This difference in hrHPV types should guide vaccine improvement and triaging of hrHPV positives. Though multiple infections are more common, some hrHPV types such as hrHPV 16 and 59 are responsible for most single infections associated with cervical cancer. Simple haematoxylin and eosin-based morphological assessments can improve the prognostication of patients with cervical cancer.


Assuntos
Infecções por Papillomavirus , Neoplasias do Colo do Útero , Vacinas , Feminino , Humanos , Pessoa de Meia-Idade , Neoplasias do Colo do Útero/diagnóstico , Neoplasias do Colo do Útero/epidemiologia , Neoplasias do Colo do Útero/patologia , Estudos Transversais , Gana/epidemiologia , Genótipo , Infecções por Papillomavirus/diagnóstico , Infecções por Papillomavirus/epidemiologia , Infecções por Papillomavirus/complicações , Papillomaviridae/genética , Detecção Precoce de Câncer/métodos
20.
BMC Infect Dis ; 24(1): 236, 2024 Feb 21.
Artigo em Inglês | MEDLINE | ID: mdl-38383360

RESUMO

BACKGROUND: Ghana's mask-wearing compliance with COVID-19 prevention protocols has not been as impressive among the general population. In this study, we examined factors influencing compliance with mask-wearing among public university students in Ghana to make recommendations for the prevention of new COVID-19 infections in public universities. METHODS: We conducted this Census in a public university in Ghana between January and December 2022. The study design was an exploratory-cross-sectional and online survey. Structured questionnaires developed by the authors were used to collect data from 3,272 students. Data were analyzed with Jeffreys's Amazing Statistics Program (JASP). Frequency distributions were used to summarize the data into tables and graphs whilst logistic regression analysis was done to examine the factors influencing compliance with mask-wearing among participants as well as their mask-wearing behaviors in school. RESULTS: Compliance with mask-wearing measures was high with 85.9% of the students wearing a nose mask always or often. Agreeing that the reusable masks do not last long was associated with a reduced chance of non-compliance (OR = 0.70, 95% CI = 0.57, 0.86). However, agreeing with some challenges was associated with increased chances of non-compliance. These included concerns that it is boring to mask after wearing makeup or having a haircut (OR = 1.71, 95% CI = 1.37, 2.14), and that masking is burdensome because it has to be removed when talking (OR = 1.26, 95% CI 1.01, 1.57), and that it is difficult to hear while masked (OR = 1.36, 95% CI = 1.04, 1.79). CONCLUSION: Cost-benefit analyses, opinions about one's look, and communication difficulties are the key factors influencing students' non-compliance with mask-wearing regulations. To encourage student compliance with mask-wearing regulations at Ghana's public universities, we recommend innovation in nose mask manufacture.


Assuntos
COVID-19 , Humanos , Gana/epidemiologia , COVID-19/prevenção & controle , Estudos Transversais , Universidades , Máscaras , Estudantes
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA