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A vast silvicultural experiment was set up in 1982 nearby the town of M'Baïki in the Central African Republic to monitor the recovery of tropical forests after disturbance. The M'Baïki experiment consists of ten 4-ha Permanent Sample Plots (PSPs) that were assigned to three silvicultural treatments in 1986 according to a random block design. In each plot, all trees with a girth at breast height greater than 30 cm were spatially located, numbered, measured, and determined botanically. Girth, mortality and newly recruited trees, were monitored almost annually over the 1982-2022 period with inventory campaigns for 35 years. The data were earlier used to fit growth and population models, to study the species composition dynamics, and the effect of silvicultural treatments on tree diversity and aboveground biomass. Here, we present new information on the forest stand structure dynamics and tree demography. The data released from this paper cover the three control plots and constitute a major contribution for further studies about the biodiversity of intact tropical forests.
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Florestas , Árvores , Clima Tropical , República Centro-Africana , Biodiversidade , Biomassa , África CentralRESUMO
To characterize enteroviruses (EVs) circulating in farm animals in Central African Republic (CAR), we screened 192 stools of animals under 12 months belonging to family farms located in or near Bangui. To assess whether EV exchanges exist between these animals and humans, we also screened 195 stools of children who lived in contact with farm animals, as well as control stools of 358 children with no contact with farm animals. EVs were typed based on their capsid sequences.In children, all EVs belonged to species A, B and C, with EV-Cs accounting for 60%. Some EV-Cs shared recent common ancestors with lineages of vaccine-derived poliovirus that emerged in the country in 2019-2020. In animals, we identified EV-Gs that belonged to 10 different types, including a previously unknown one that we named EV-G28, while no EV-E or EV-F were observed. The CAR EV-Gs were genetically closely related to specimens sampled in other continents and some of them harboured the torovirus-derived insertion already reported in some EV-Gs. The worldwide circulation of EV-Gs is likely due the massive international trade of live animals. Besides, two human EV-Cs (coxsackievirus A17 and coxsackievirus A24) were detected in pigs, suggesting that these viruses could cross the species barrier. Our work provides original data on the epidemiology and ecology of EVs circulating among herd animals in Africa.
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Animais Domésticos , Infecções por Enterovirus , Enterovirus , Fezes , Filogenia , Animais , República Centro-Africana/epidemiologia , Infecções por Enterovirus/virologia , Infecções por Enterovirus/epidemiologia , Infecções por Enterovirus/veterinária , Humanos , Animais Domésticos/virologia , Enterovirus/classificação , Enterovirus/isolamento & purificação , Enterovirus/genética , Fezes/virologia , Suínos , Fazendas , Lactente , Criança , Masculino , Pré-Escolar , FemininoRESUMO
BACKGROUND: In 2020, during the COVID-19 pandemic, Médecins Sans Frontières (MSF) initiated three cycles of dihydroartemisin-piperaquine (DHA-PQ) mass drug administration (MDA) for children aged three months to 15 years within Bossangoa sub-prefecture, Central African Republic. Coverage, clinical impact, and community members perspectives were evaluated to inform the use of MDAs in humanitarian emergencies. METHODS: A household survey was undertaken after the MDA focusing on participation, recent illness among eligible children, and household satisfaction. Using routine surveillance data, the reduction during the MDA period compared to the same period of preceding two years in consultations, malaria diagnoses, malaria rapid diagnostic test (RDT) positivity in three MSF community healthcare facilities (HFs), and the reduction in severe malaria admissions at the regional hospital were estimated. Twenty-seven focus groups discussions (FGDs) with community members were conducted. RESULTS: Overall coverage based on the MDA card or verbal report was 94.3% (95% confidence interval (CI): 86.3-97.8%). Among participants of the household survey, 2.6% (95% CI 1.6-40.3%) of round 3 MDA participants experienced illness in the preceding four weeks compared to 30.6% (95% CI 22.1-40.8%) of MDA non-participants. One community HF experienced a 54.5% (95% CI 50.8-57.9) reduction in consultations, a 73.7% (95% CI 70.5-76.5) reduction in malaria diagnoses, and 42.9% (95% CI 36.0-49.0) reduction in the proportion of positive RDTs among children under five. A second community HF experienced an increase in consultations (+ 15.1% (- 23.3 to 7.5)) and stable malaria diagnoses (4.2% (3.9-11.6)). A third community HF experienced an increase in consultations (+ 41.1% (95% CI 51.2-31.8) and malaria diagnoses (+ 37.3% (95% CI 47.4-27.9)). There were a 25.2% (95% CI 2.0-42.8) reduction in hospital admissions with severe malaria among children under five from the MDA area. FGDs revealed community members perceived less illness among children because of the MDA, as well as fewer hospitalizations. Other indirect benefits such as reduced household expenditure on healthcare were also described. CONCLUSION: The MDA achieved high coverage and community acceptance. While some positive health impact was observed, it was resource intensive, particularly in this rural context. The priority for malaria control in humanitarian contexts should remain diagnosis and treatment. MDA may be additional tool where the context supports its implementation.
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Antimaláricos , Artemisininas , COVID-19 , Malária , Administração Massiva de Medicamentos , Humanos , Antimaláricos/uso terapêutico , Antimaláricos/administração & dosagem , Pré-Escolar , Lactente , Criança , Adolescente , COVID-19/epidemiologia , República Centro-Africana/epidemiologia , Artemisininas/uso terapêutico , Artemisininas/administração & dosagem , Administração Massiva de Medicamentos/estatística & dados numéricos , Feminino , Masculino , Malária/tratamento farmacológico , SARS-CoV-2 , Quinolinas/administração & dosagem , Quinolinas/uso terapêuticoRESUMO
BACKGROUND: The Central African Republic (CAR) is one of the countries with the highest prevalence of viral hepatitis infection in the world. Coinfection with HIV increases the morbidity and mortality beyond that of mono-infection with either hepatitis or HIV. The present study describes the geographic distribution of viral hepatitis infections and molecular characterization of these viruses in the CAR. METHODOLOGY: Out of 12,599 persons enrolled during the fourth Multiple Indicator Cluster Survey of 2010 in the CAR, 10,621 Dried Blood Spot (DBS) samples were obtained and stored at -20°C. Of these DBS, 4,317 samples were randomly selected to represent all regions of the CAR. Serological tests for hepatitis B, D, and C viruses were performed using the ELISA technique. Molecular characterization was performed to identify strains. RESULTS: Of the 4,317 samples included, 53.2% were from men and 46.8% from women. The HBsAg prevalence among participants was 12.9% and that HBc-Ab was 19.7%. The overall prevalence of HCV was 0.6%. Co-infection of HIV/HBV was 1.1% and that of HBV/HDV was 16.6%. A total of 77 HBV, 6 HIV, and 6 HDV strains were successfully sequenced, with 72 HBV (93.5%) strains belonging to genotype E and 5 (6.5%) strains belonging to genotype D. The 6 HDV strains all belonged to clade 1, while 4 recombinants subtype were identified among the 6 strains of HIV. CONCLUSION: Our study found a high prevalence of HBV, HBV/HDV and HBV/HIV co-infection, but a low prevalence of HCV. CAR remains an area of high HBV endemicity. This study's data and analyses would be useful for establishing an integrated viral hepatitis and HIV surveillance program in the CAR.
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Coinfecção , Infecções por HIV , Humanos , Infecções por HIV/epidemiologia , Infecções por HIV/virologia , Infecções por HIV/complicações , Feminino , Masculino , Coinfecção/epidemiologia , Coinfecção/virologia , Adulto , Estudos Soroepidemiológicos , República Centro-Africana/epidemiologia , Pessoa de Meia-Idade , Adolescente , Adulto Jovem , Hepatite Viral Humana/epidemiologia , Hepatite Viral Humana/virologia , Hepatite B/epidemiologia , Hepatite B/virologia , Vírus da Hepatite B/genética , Vírus da Hepatite B/isolamento & purificação , Criança , Hepatite C/epidemiologia , Hepatite C/virologia , Filogenia , Pré-Escolar , PrevalênciaRESUMO
BACKGROUND: Hepatitis E virus (HEV) is a major cause of enterotropic viral hepatitis, a major public health problem in many developing countries. In Central African Republic (CAR), HEV genotypes 1, 2, and 3 have been found to have an impact on human health. However, data on HEV in animal reservoirs are still lacking for CAR. Here, we investigated the presence of HEV in farmed pigs and goats in Bangui, the capital city of CAR, using molecular methods. METHODOLOGY: In a prospective study, fecal samples from 61 pigs and 39 goats from farms in five districts (2nd, 4th, 6th, 7th, 8th) of Bangui were collected and tested for HEV RNA by real-time RT-PCR. The samples were further analyzed by nested-PCR and sequenced to determine the genotype and subtype to which the virus belong. RESULTS: In total, 22/100 (22.0%) feces samples were successfully amplified for HEV RNA by real time RT-PCR. All positive samples were from pigs (22/61; 36.1%), while all goat samples were negative (0/39). Twelve HEV RNA samples (12/22 or 54.5%) were successfully amplified by nested RT-PCR, and subsequently sequenced. Phylogenetic analysis revealed that the obtained sequences clustered with subtype 3h and were genetically related to the human HEV sequences from CAR. CONCLUSION: This study confirms that pigs constitute an HEV reservoir, with genotype 3 being the major circulating strain. Further studies are needed to investigate other local reservoirs and to improve knowledge of the molecular epidemiology of HEV in CAR.
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Vírus da Hepatite E , Hepatite E , Doenças dos Suínos , Suínos , Animais , Humanos , Vírus da Hepatite E/genética , Hepatite E/epidemiologia , Hepatite E/veterinária , Filogenia , República Centro-Africana/epidemiologia , Estudos Prospectivos , Reação em Cadeia da Polimerase em Tempo Real , RNA Viral/genética , RNA Viral/análise , Genótipo , Fezes/química , Cabras/genéticaRESUMO
BACKGROUND: Hepatitis E virus (HEV) is a major public health disease causing large outbreaks and sporadic cases of acute hepatitis. We investigated an outbreak of HEV infection that occurred in September 2018 in the health district (HD) of Bocaranga-Koui, located in the northwestern part of Central African Republic (CAR). METHODS: Blood samples were collected from 352 patients aged 0-85 years suspected to be infected with yellow fever (YF), according to the World Health Organization YF case definition. The notification forms from recorded cases were used. Water consumed in the HD were also collected. Human samples found negative for anti-YF IgM were then tested by ELISA for anti-HEV IgM and IgG antibodies. Positive anti-HEV (IgM and/or IgG) samples and collected water were then subjected to molecular biology tests using a real time RT-PCR assay, followed by a nested RT-PCR assay for sequencing and phylogenetic analysis. RESULTS: Of the 352 icterus patients included, anti-HEV IgM was found in 142 people (40.3%) and anti-HEV IgG in 175 (49.7%). Although HEV infection was detected in all age groups, there was a significant difference between the 0-10 age groups and others age groups (P = 0.001). Elevated levels of serum aminotransferase were observed in anti-HEV IgM-positive subjects. Phylogenetic analysis showed HEV genotype 1e in infected patients as well as in the contaminated water. CONCLUSION: This epidemic showed that CAR remains an HEV-endemic area. The genotype 1e strain was responsible for the HEV outbreak in Bocaranga-Koui HD. It is necessary to implement basic conditions of hygiene and sanitation to prevent further outbreaks of a HEV epidemics, to facilitate access to clean drinking water for the population, to launch intensive health education for basic hygiene measures, to sett up targeted hygiene promotion activities and, finally, to ensure that formal health care is available.
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Água Potável , Vírus da Hepatite E , Hepatite E , Humanos , Hepatite E/epidemiologia , República Centro-Africana/epidemiologia , Filogenia , Vírus da Hepatite E/genética , Anticorpos Anti-Hepatite , Surtos de Doenças , Imunoglobulina M , Imunoglobulina G , RNA Viral/genéticaRESUMO
Human Papillomavirus (HPV)-35 accounts for up 10% of cervical cancers in Sub-Saharan Africa. We herein assessed the genetic diversity of HPV35 in HIV-negative women from Chad (identified as #CHAD) and HIV-infected men having sex with men (MSM) in the Central African Republic (CAR), identified as #CAR. Ten HPV35 DNA from self-collected genital secretions (n = 5) and anal margin samples (n = 5) obtained from women and MSM, respectively, were sequenced using the ABI PRISM® BigDye Sequencing technology. All but one HPV35 strains belonged to the A2 sublineage, and only #CAR5 belonged to A1. HPV35 from #CAR had higher L1 variability compared to #CHAD (mean number of mutations: 16 versus 6). L1 of #CAR5 showed a significant variability (2.29%), suggesting a possible intra-type divergence from HPV35H. Three (BC, DE, and EF) out of the 5 capsid loops domains remained totally conserved, while FG- and HI- loops of #CAR exhibited amino acid variations. #CAR5 also showed the highest LCR variability with a 16bp insertion at binding sites of the YY1. HPV35 from #CHAD exhibited the highest variability in E2 gene (P<0.05). E6 and E7 oncoproteins remained well conserved. There is a relative maintenance of a well conserved HPV35 A2 sublineage within heterosexual women in Chad and MSM with HIV in the Central African Republic.
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Alphapapillomavirus , Infecções por HIV , Papillomavirus Humano , Infecções por Papillomavirus , Minorias Sexuais e de Gênero , Masculino , Humanos , Feminino , República Centro-Africana , Estudos Transversais , Homossexualidade Masculina , Papillomaviridae/genética , Infecções por HIV/epidemiologia , Variação Genética , Infecções por Papillomavirus/epidemiologiaRESUMO
Introduction: Oculo-orbital tumors are common. Their clinical and histological features are multiple. The management of oculo-orbital tumors is a real challenge in sub-Saharan Africa, especially in our context. The aim of this study was to contribute to the improvement of the management of oculo-orbital tumors at the Bangui Teaching Hospital (CNHUB). Methodology: This was a prospective, observational study of oculo-orbital tumors over 12 months from January 1 to December 31, 2022 in the ophthalmology department of the CNHUB. All consenting patients with histologically proven tumors of the eyeball and/or its adnexa were included in this study, regardless of age and sex.The parameters studied were:epidemiological: age, sex, occupation, origin;clinical: time of consultation, functional signs and associated signs, physical examination signs, risk factors;paraclinical: report of the anatomopathological examination of the operating room;therapeutic: treatment modalities (chemotherapy, surgery, palliative treatment, radiotherapy).These data were collected on a pre-established survey form for direct administration. The processing and the production of the results were carried out with Excel and Epi Info 7.0 software. Results: We included 97 patients with a mean age of 37.5 years, ranging from 2 to 70 years. There was a male predominance (sex-ratio = 1.8). Almost all patients lived in Bangui (96%). Patients under 40 years of age were most commonly affected (55%). The majority of tumors were benign (55%). Ocular pain (24%), lacrimation (22%) and orbital swelling (16%) were the main symptoms. Risk factors were mainly age (23%), diabetes (22%), HIV infection (16%) and alcohol and tobacco use (37%). The most common treatments were surgical removal (68%) and enucleation (16%). Chemotherapy was combined with surgery in 37% of cases. Conclusion: Oculo-orbital tumors are frequent in our context. Their morpho-histological presentations are varied. A multidisciplinary approach is important for a good management.
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Neoplasias Oculares , Adulto , Feminino , Humanos , Masculino , República Centro-Africana/epidemiologia , Infecções por HIV , Hospitais Universitários , Neoplasias Orbitárias/epidemiologia , Estudos Prospectivos , Pré-Escolar , Criança , Adolescente , Adulto Jovem , Pessoa de Meia-Idade , Idoso , Neoplasias Oculares/epidemiologiaRESUMO
Since its outbreak, Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) spread rapidly, causing the Coronavirus Disease 19 (COVID-19) pandemic. Even with the vaccines' administration, the virus continued to circulate due to inequal access to prevention and therapeutic measures in African countries. Information about COVID-19 in Africa has been limited and contradictory, and thus regional studies are important. On this premise, we conducted a genomic surveillance study about COVID-19 lineages circulating in Bangui, Central African Republic (CAR). We collected 2687 nasopharyngeal samples at four checkpoints in Bangui from 2 to 22 July 2021. Fifty-three samples tested positive for SARS-CoV-2, and viral genomes were sequenced to look for the presence of different viral strains. We performed phylogenetic analysis and described the lineage landscape of SARS-CoV-2 circulating in the CAR along 15 months of pandemics and in Africa during the study period, finding the Delta variant as the predominant Variant of Concern (VoC). The deduced aminoacidic sequences of structural and non-structural genes were determined and compared to reference and reported isolates from Africa. Despite the limited number of positive samples obtained, this study provides valuable information about COVID-19 evolution at the regional level and allows for a better understanding of SARS-CoV-2 circulation in the CAR.
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COVID-19 , SARS-CoV-2 , Humanos , SARS-CoV-2/genética , Proteoma , COVID-19/epidemiologia , República Centro-Africana/epidemiologia , Filogenia , Genômica , AntiviraisRESUMO
Introduction: yaws is endemic in the Central African Republic. The last cases of yaws notified by CAR to WHO date back to 2012. The objective of this study was to measure the prevalence of yaws in the health district of Mbaïki and to describe its clinical and epidemiological characteristics. Methods: this is a descriptive cross-sectional study, conducted from April 10 to 18, 2020 in the Mbaïki health district. Yaws cases were sought in 570 households in the 38 selected villages of the district. Any consenting individual over the age of one year with yaws-like skin lesions was a suspected case of yaws and included in the study. Blood was taken from suspected cases for serological testing (TDR, RPR and TPHA). Any suspected case of yaws with positive RPR and TPHA was considered a confirmed case. Results: a total of 1967 people were examined, of whom 113 were considered suspected cases of yaws. All suspected cases were RPR-positive, 41 TPHA-positive and 13 RDT-positive. Forty-one cases of yaws were confirmed in 18 (47.37%) villages. The prevalence of yaws in the Mbaïki health district was 2.08%. Among the cases, 38.94% were children aged 1 to 14. The sex ratio was 1.69. Lesions clinically suggestive of yaws were papilloma-like in 77.00% of cases, followed by micropapules (8.00%) and ulcerations (5.00%). Conclusion: eight of the nine communes in the Mbaïki health district are yaws-endemic. This result suggests the need to implement the Morges strategy in the Mbaïki health district.
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Dermatopatias , Bouba , Criança , Humanos , República Centro-Africana/epidemiologia , Estudos Transversais , Úlcera , Bouba/diagnóstico , Bouba/epidemiologia , Masculino , Feminino , Lactente , Pré-Escolar , AdolescenteRESUMO
Leprosy is a neglected tropical disease that is still present worldwide despite efforts aimed at elimination of the disease. The BaAka Pygmy community inhabiting rural areas in the Central African Republic is one of the most leprosy-vulnerable populations. The aim of the study was to assess the prevalence of leprosy in the BaAka Pygmy population. People living in the Dzanga Sangha protected area were regularly visited by a mobile clinic in 2019/2020. The diagnosis was based on the clinical manifestation of the disease. Deformations of skin and extremities were assessed. In a 12-month period 26 cases of leprosy were diagnosed and 25 patients received treatment. 24 of those patients were BaAka Pygmies, 10 were women, 7 were children under 15 years old and 8 were diagnosed with grade 2 disability. Presented data shows that leprosy in Dzanga Sangha region is not well controlled due to the high transmission rate. Efforts to diagnose and report new leprosy cases should be intensified.
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Hanseníase , Criança , Humanos , Feminino , Adolescente , Masculino , República Centro-Africana/epidemiologia , Hanseníase/diagnóstico , Hanseníase/epidemiologia , Hanseníase/tratamento farmacológico , PrevalênciaRESUMO
OBJECTIVE: The objective of this survey was to describe epidemiological characteristics and evaluate vaccine effectiveness against pertussis in the sub-prefecture of Baoro (Central African Republic). METHOD: We conducted a case control study from June to July 2022 in the sub-prefecture of Baoro in the district of Baour-Baoro. Community-based definitions of surveillance were applied to include cases and controls. RESULTS: All in all, 143 confirmed and suspected cases and 166 controls were enrolled in this investigation. The epidemic had affected 12 neighborhoods and 9 villages. The village of Bugbassem alone had 32 patients, and 50% of the patients lived in rural areas. The age groups of 12 to 59 months accounted for 58% of cases. Patients were female in 54% of cases (p = 0.8). The attack rate among unvaccinated patients (65%) was higher than that of vaccinated patients (40%), while 15% (N = 21) of children were hospitalized with no recorded deaths. Pentavalent 3rd dose vaccination coverage was 49% in controls versus 33% in cases. Vaccination provided a significant protective effect (Odds Ratio = 0.3; 95% CI: 0.2-0.6). All told, vaccine efficacy against pertussis was 38%. CONCLUSION: Pertussis is a re-emerging disease currently occurring as a result of low pertussis vaccination coverage. It strongly affects rural areas with low vaccination rates. Vaccination strategy requires reinforcement in rural areas.
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Coqueluche , Criança , Humanos , Feminino , Lactente , Pré-Escolar , Masculino , Coqueluche/epidemiologia , Coqueluche/prevenção & controle , Estudos de Casos e Controles , República Centro-Africana/epidemiologia , Vacinação , Cobertura VacinalRESUMO
Cleft palate is the absence of the vault of the mouth resulting in communication between the nose and the mouth. The current frequency of cleft is 0.3% among black people. The incriminated etiological factors of this congenital malformation are exogenous and genetic. The diagnostic is clinical and above all marked by the consequences linked to the cleft, which are multiple morphological problems entailing difficulties from the first days of life (sackling impossible in the event of total cleft lip and palate), functional disorders linked to cleft velopalatine by bucco-nasal reflux, major phonation disorder, dysfunction of the Eustachian tubes causing hearing and otorhinolaryngology (ORL) disorders, breathing disorders. Thanks to the progress of ultrasound, the diagnosis can sometimes be made during pregnancy. Obstetric ultrasound can diagnose cleft lip and palate from the 16th week of amenorrhea. The Veau-Wardill classification based on embryology makes it possible to understand the different types.The care is now organized in a multidisciplinary frameware where the coordination of each specialty will make it possible to harmonize the different treatments. The current attitude is based on the principe of early management to restore the functionality of the velopalatine muscle straps as quickly as possible, reducing the risk of phonatory and auditory sequelae.Concerning cleft palates, the data are fragmented and almost non-existent in the Central African Republic, hence the interest in publishing this clinical case highlighted by chance. We report a clinical case of neglected cleft palate in a 13-year-old girl discovered during a cleft lip and palate screening campaign at the Pediatric University Hospital of Bangui.
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Fenda Labial , Fissura Palatina , Feminino , Criança , Humanos , Adolescente , Fissura Palatina/diagnóstico , Fenda Labial/diagnóstico , República Centro-Africana/epidemiologia , Nariz , HospitaisRESUMO
Despite being preventable through vaccination, measles is still one of the most important causes of morbidity and mortality in young children in Africa. In 2015, several African countries, including the Central African Republic (CAR), began implementing national measles elimination programs. However, measles remains a public health problem in Africa, particularly in the CAR. A retrospective study was conducted at the Institut Pasteur de Bangui, using blood samples (n = 255) and oral swabs (n = 7) collected between January 2012 and December 2016 from measles IgM-positive cases, to attempt genotyping of circulating measles virus strains. Overall, 50 samples were positive by real-time polymerase chain reaction, and 40 sequences of acceptable quality were obtained. The phylogenetic analysis showed that 38 strains belonged to genotype B3 suggesting that this genotype was endemic in the CAR during the study period. No genotype B2 sequences were detected, suggesting that this genotype is no longer present in the CAR.
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Surtos de Doenças , Sarampo , Criança , Humanos , Pré-Escolar , República Centro-Africana/epidemiologia , Estudos Retrospectivos , Filogenia , Vírus do Sarampo/genéticaRESUMO
BACKGROUND: The objectives of this study were to determine the association between the vulnerability factors linked to human immunodeficiency virus (HIV) and other sexually transmitted infection among the young women who sell sex (YWSS) group (15-24 years) and adult sex workers, engaged in consensual sex for money (AFSW). METHODS: A cross-sectional study was conducted among AFSW involved in commercial sex transactions. Prevalence ratios (PR) analysis was carried out using log-binomial regression model. RESULTS: The prevalence of HIV-1 was 29.4% among YWSS compared to 19.6% among female sex worker (PR = 1.43 [1.07-1.91]). Consistent condoms use last 3 months were very low at 22.3% and 41.2%, respectively (PR = 0.52 [0.37-0.74]), the low education level among YWSS versus AFSW (PR = 0.55 [0.40-0.76]); YWSS having been a victim of sexual violence in the last 12 months (PR = 2.00 [1.52-2.63]), were also more likely to be HIV positive. CONCLUSIONS: The YWSS had a high prevalence of HIV, experienced other socioeconomic vulnerabilities and remain a key population for comprehensive HIV programs. To reach all YWSS, programs need to consider many outreach programs and address the shared determinants of HIV risk.
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Infecções por HIV , Profissionais do Sexo , Adulto , Feminino , Humanos , Trabalho Sexual , Infecções por HIV/epidemiologia , HIV , República Centro-Africana/epidemiologia , Estudos Transversais , Comportamento Sexual , PreservativosRESUMO
BACKGROUND: The emergence and spread of multidrug-resistant tuberculosis (MDR-TB) presents a challenge to the "End TB by 2035" strategy. This study aimed to identify the risk factors associated with MDR-TB in patients admitted to the pneumo-physiology clinic of the National University Hospital of Bangui in Central African Republic. METHODS: This was a "retrospective" chart review study. Cases were represented by patients more than 18 years of age treated for MDR-TB and controls were patients with "at least rifampicin-susceptible" TB treated "with first-line anti-TB regimen" and who at the end of treatment were declared cured. The status of "cured" was exclusively applicable to non-MDR TB. Risk factors associated with MDR-TB were identified by multivariate analysis. RESULTS: We included 70 cases and 140 controls. The median age was 35 years, IQR (22;46 years). The main factors associated with the occurrence of MDR-TB in multivariate analysis were male gender (0 R = 3.02 [1.89-3.99], p = 0.001), residence in a peri-urban/urban area (0 R = 3.06 [2.21-4.01], p = 0.002), history of previous TB treatment (0 R= 3.99 [2.77-4.25], p < 0.001) and the presence of multidrug-resistant TB in the family (0 R=1.86 [1.27-2.45], p = 0.021). CONCLUSION: The emergence of MDR-TB can be reduced by implementing appropriate strategies, such as preventive therapy in contacts of MDR-TB patients and detecting and appropriately treating MDR-TB patients to prevent further spread of infection.
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Mycobacterium tuberculosis , Tuberculose Resistente a Múltiplos Medicamentos , Humanos , Masculino , Adulto , Feminino , Antituberculosos/farmacologia , Antituberculosos/uso terapêutico , Estudos de Casos e Controles , República Centro-Africana/epidemiologia , Tuberculose Resistente a Múltiplos Medicamentos/tratamento farmacológico , Tuberculose Resistente a Múltiplos Medicamentos/epidemiologia , Fatores de RiscoRESUMO
During 2016-2022, PCR testing confirmed 100 mpox cases among 302 suspected cases in the Central African Republic. The highest detection rates were from active lesions (40%) and scabs (36%); cycle thresholds were lower (≈18) than those for blood samples (≈33). Results were consistent for generic primer- and clade I primer-specific PCR tests.
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Mpox , Humanos , República Centro-Africana/epidemiologia , Técnicas de Laboratório ClínicoRESUMO
BACKGROUND: The delivery of quality healthcare for women and children in conflict-affected settings remains a challenge that cannot be mitigated unless global health policymakers and implementers find an effective modality in these contexts. The International Committee of the Red Cross (ICRC) and the Canadian Red Cross (CRC) used an integrated public health approach to pilot a program for delivering community-based health services in the Central African Republic (CAR) and South Sudan in partnership with National Red Cross Societies in both countries. This study explored the feasibility, barriers, and strategies for context-specific agile programming in armed conflict affected settings. METHODS: A qualitative study design with key informant interviews and focus group discussions using purposive sampling was used for this study. Focus groups with community health workers/volunteers, community elders, men, women, and adolescents in the community and key informant interviews with program implementers were conducted in CAR and South Sudan. Data were analyzed by two independent researchers using a content analysis approach. RESULTS: In total, 15 focus groups and 16 key informant interviews were conducted, and a total of 169 people participated in the study. The feasibility of service delivery in armed conflict settings depends on well-defined and clear messaging, community inclusiveness and a localized plan for delivery of services. Security and knowledge gaps, including language barriers and gaps in literacy negatively impacted service delivery. Empowering women and adolescents and providing context-specific resources can mitigate some barriers. Community engagement, collaboration and negotiating safe passage, comprehensive delivery of services and continued training were key strategies identified for agile programming in conflict settings. CONCLUSION: Using an integrative community-based approach to health service delivery in CAR and South Sudan is feasible for humanitarian organizations operating in conflict-affected areas. For agile, and responsive implementation of health services in conflict-affected settings, decision-makers should focus on effectively engaging communities, bridge inequities through the engagement of vulnerable groups, collaborate and negotiate for safe passage for delivery of services, keep logistical and resource constraints in consideration and contextualize service delivery with the support of local actors.
Assuntos
Saúde Pública , Masculino , Criança , Adolescente , Humanos , Feminino , Idoso , Sudão do Sul , República Centro-Africana , Canadá , Grupos FocaisRESUMO
Problem: In 2021, Central African Republic was facing multiple challenges in vaccinating its population against coronavirus disease 2019 (COVID-19), including inadequate infrastructure and funding, a shortage of health workers and vaccine hesitancy among the population. Approach: To increase COVID-19 vaccination coverage, the health ministry used three main approaches: (i) task shifting to train and equip existing community health workers (CHWs) to deliver COVID-19 vaccination; (ii) evidence gathering to understand people's reluctance to be vaccinated; and (iii) bundling of COVID-19 vaccination with the polio vaccination programme. Local setting: Central African Republic is a fragile country with almost two thirds of its population in need of humanitarian assistance. Despite conducting two major COVID-19 vaccination campaigns, by January 2022 only 9% (503 000 people) of the 5 570 659 general population were fully vaccinated. Relevant changes: In the 6 months from February to July 2022, Central African Republic tripled its coverage of COVID-19 vaccination to 29% (1 615 492 out of 5 570 659 people) by August 2022. The integrated polio-COVID-19 campaign enabled an additional 136 040 and 218 978 people to be vaccinated in the first and second rounds respectively, at no extra cost. Evidence obtained through surveys and focus group discussions enabled the health ministry to develop communication strategies to dispel vaccine hesitancy and misconceptions. Lessons learnt: Task shifting COVID-19 vaccination to CHWs can be an efficient solution for rapid scaling-up of vaccination campaigns. Building trust with the community is also important for addressing complex health issues such as vaccine hesitancy. Collaborative efforts are necessary to provide access to COVID-19 vaccines for high-risk and vulnerable populations.