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1.
BMC Public Health ; 24(1): 317, 2024 01 29.
Artigo em Inglês | MEDLINE | ID: mdl-38287308

RESUMO

BACKGROUND: Zoonotic malaria is a growing public health threat in the WHO Southeast Asia (SEA) and Western Pacific (WP) regions. Despite vector-control measures, the distribution of Macaque fascicularis and M. nemestrina, and Anopheles mosquitoes carrying non-human simian malaria parasites poses challenges to malaria elimination. The systematic review assesses the literature on knowledge and malaria-preventive practices in zoonotic malaria-affected areas across the WHO SEA and WP, aiming to identify challenges for malaria control. METHODS: Peer-reviewed articles published in English, Malay and Indonesian between January 2010 and December 2022 were searched in OVID Medline, Scopus, Web of Science, and Google Scholar. Studies of any design-excluding reviews, conference proceedings, and reports from all WHO SEA and WP countries vulnerable to zoonotic malaria-were included. Backwards-reference screening and thematic analysis were conducted. RESULTS: Among 4,174 initially searched articles, 22 peer-reviewed articles met the inclusion criteria. An additional seven articles were identified through backwards-reference screening, resulting in a total of 29 articles for this review. Half of these studies were conducted in Cambodia, Myanmar, Malaysia, and Thailand, mainly in forests and remote communities. The review highlighted inconsistencies in the operationalization of knowledge, and five major themes were identified related to knowledge: causation and transmission, symptoms, treatment, severity and complications, and malaria prevention. While participants generally had some understanding of malaria causation/transmission, minority and indigenous ethnic groups demonstrated limited knowledge and held misconceptions, such as attributing malaria to drinking dirty water. Preventive practices included traditional and non-traditional or modern methods-with a preference for traditional approaches to avoid mosquito bites. Challenges to malaria control included feasibility, cost, and access to healthcare services. CONCLUSION: This review provides insights into knowledge, local understandings, and preventive practices related to malaria in the WHO SEA and WP regions. The findings highlight the need for future research to explore the knowledge of at-risk communities regarding zoonotic malaria, their perceive threat of the disease and factors exposing them to zoonotic malaria. New strategies must be developed for zoonotic malaria programs tailored to local contexts, emphasizing the significance of community participation, health education, and socio-behavioural change initiatives. It is important to consider the interconnectedness of human health, environmental and non-human primates conservation. Socio-cultural nuances should also be carefully considered in the design and implementation of these programs to ensure their effect tailored to local contexts.


Assuntos
Antimaláricos , Malária , Animais , Humanos , Antimaláricos/uso terapêutico , Mosquitos Vetores , Sudeste Asiático , Camboja
2.
J Med Virol ; 95(8): e28987, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-37501648

RESUMO

Rotavirus is the leading causative viral agent of pediatric acute gastroenteritis globally, infecting mostly children 5 years old and below. Data on rotavirus prevalence in Malaysia is scarce, despite the WHO's recommendation for continuous rotavirus surveillance, and has underestimated the need for national rotavirus vaccination. Characteristics of the current rotavirus strains in Malaysia have to be determined to understand the rotavirus epidemiology and vaccine compatibility. This study sought to determine the genetic relatedness of Sarawak rotavirus strains with global strains and to determine the antigenic coverage and epitope compatibility of Rotarix and RotaTeq vaccines with the Sarawak rotavirus strains via in silico analysis. A total of 89 stool samples were collected from pediatric patients (<5 years old) with acute gastroenteritis at private hospitals in Kuching, Sarawak. Rotavirus was detected using reverse transcription-polymerase chain reaction. Positive amplicons were analyzed using nucleotide sequencing before phylogenetic analyses and assessment of epitope compatibility. Genotyping revealed G1P[8] (1/13; 7.7%), G3P[8] (3/13; 23%), G9P[4] (1/13; 7.7%), and G9P[8] (3/13; 23%), G9P[X] (1/13; 7.7%), GXP[4] (1/13; 7.7%), and GXP[8] (3/13; 23%) in samples. All wild-type Sarawak rotavirus strains, with the exception of G1, showed variations in their phylogenetic and antigenic epitope characteristics.


Assuntos
Gastroenterite , Infecções por Rotavirus , Vacinas contra Rotavirus , Rotavirus , Animais , Cavalos/genética , Suínos , Malásia/epidemiologia , Filogenia , Genótipo , Epidemiologia Molecular , Gastroenterite/epidemiologia , Antígenos Virais/genética , Epitopos , Fezes
3.
Malar J ; 22(1): 166, 2023 May 26.
Artigo em Inglês | MEDLINE | ID: mdl-37237418

RESUMO

BACKGROUND: Many rural communities in Malaysian Borneo and Southeast Asia are at risk of Plasmodium knowlesi malaria. Multiple factors contribute to infection, however, a deep understanding of illness causation and prevention practices among at-risk communities remains limited. This study aims to document local knowledge on malaria causation and preventive practices of rural communities in Sabah, Malaysia, using photovoice-a participatory research method. METHODS: From January to June 2022, a photovoice study was conducted with rural communities in Matunggong subdistrict, Malaysia, to explore their experiences with and local knowledge of non-human primate malaria and prevention practices. The study included (1) an introductory phase in which participants were introduced to the photovoice method; (2) a documentation phase in which participants captured and narrated photos from their communities; (3) a discussion phase in which participants discussed photos and relevant topics through a series of three focus group discussions (FGDs) per village; and (4) a dissemination phase where selected photos were shared with key stakeholders through a photo exhibition. A purposively selected sample of 26 participants (adults > 18 years old, male, and female) from four villages participated in all phases of the study. The study activities were conducted in Sabah Malay dialect. Participants and the research team contributed to data review and analyses. RESULTS: Rural communities in Sabah, Malaysia possess local knowledge that attributes non-human primate malaria to natural factors related to the presence of mosquitoes that bite humans and which carry "kuman-malaria" or malaria parasite. Participants revealed various preventive practises ranging from traditional practises, including burning dried leaves and using plants that produce foul odours, to non-traditional approaches such as aerosols and mosquito repellents. By engaging with researchers and policymakers, the participants or termed as co-researchers in this study, showcased their ability to learn and appreciate new knowledge and perspectives and valued the opportunity to share their voices with policymakers. The study successfully fostered a balance of power dynamics between the co-researchers, research team members and policymakers. CONCLUSION: There were no misconceptions about malaria causation among study participants. The insights from study participants are relevant because of their living experience with the non-human malaria. It is critical to incorporate rural community perspectives in designing locally effective and feasible malaria interventions in rural Sabah, Malaysia. Future research can consider adapting the photovoice methodology for further research with the community toward building locally tailored-malaria strategies.


Assuntos
Malária , Plasmodium knowlesi , Adulto , Animais , Humanos , População Rural , Bornéu , Malária/prevenção & controle , Malária/parasitologia , Sudeste Asiático , Malásia/epidemiologia
4.
Malar J ; 22(1): 292, 2023 Oct 03.
Artigo em Inglês | MEDLINE | ID: mdl-37789320

RESUMO

BACKGROUND: Since 2018, no indigenous human malaria cases has been reported in Malaysia. However, during the recent COVID-19 pandemic the World Health Organization is concerned that the pandemic might erode the success of malaria control as there are reports of increase malaria cases in resource limited countries. Little is known how the COVID-19 pandemic has impacted malaria in middle-income countries like Malaysia. Here the public health response to a Plasmodium malariae outbreak occurred in a village in Sabah state, Malaysia, during a COVID-19 movement control order is reported. METHODS: An outbreak was declared following the detection of P. malariae in July 2020 and active case detection for malaria was performed by collecting blood samples from residents residing within 2 km radius of Moyog village. Vector prevalence and the efficacy of residual insecticides were determined. Health awareness programmes were implemented to prevent future outbreaks. A survey was conducted among villagers to understand risk behaviour and beliefs concerning malaria. RESULTS: A total of 5254 blood samples collected from 19 villages. Among them, 19 P. malariae cases were identified, including the index case, which originated from a man who returned from Indonesia. His return from Indonesia and healthcare facilities visit coincided with the movement control order during COVID-19 pandemic when the healthcare facilities stretched its capacity and only serious cases were given priority. Despite the index case being a returnee from a malaria endemic area presenting with mild fever, no malaria test was performed at local healthcare facilities. All cases were symptomatic and uncomplicated except for a pregnant woman with severe malaria. There were no deaths; all patients recovered following treatment with artemether-lumefantrine combination therapy. Anopheles balabacensis and Anopheles barbirostris were detected in ponds, puddles and riverbeds. The survey revealed that fishing and hunting during night, and self-treatment for mild symptoms contributed to the outbreak. Despite the index case being a returnee from a malaria-endemic area presenting with mild fever, no malaria test was performed at local healthcare facilities. CONCLUSION: The outbreak occurred during a COVID-19 movement control order, which strained healthcare facilities, prioritizing only serious cases. Healthcare workers need to be more aware of the risk of malaria from individuals who return from malaria endemic areas. To achieve malaria elimination and prevention of disease reintroduction, new strategies that include multisectoral agencies and active community participation are essential for a more sustainable malaria control programme.


Assuntos
Anopheles , Antimaláricos , COVID-19 , Malária , Plasmodium knowlesi , Masculino , Animais , Feminino , Humanos , Malásia/epidemiologia , Plasmodium malariae , Saúde Pública , Pandemias , Mosquitos Vetores , Artemeter , Combinação Arteméter e Lumefantrina , COVID-19/epidemiologia , Malária/epidemiologia , Malária/prevenção & controle , Surtos de Doenças
5.
Malar J ; 22(1): 343, 2023 Nov 09.
Artigo em Inglês | MEDLINE | ID: mdl-37946259

RESUMO

BACKGROUND: The increasing incidence of Plasmodium knowlesi malaria poses a significant challenge to efforts to eliminate malaria from Malaysia. Macaque reservoirs, outdoors-biting mosquitoes, human activities, and agricultural work are key factors associated with the transmission of this zoonotic pathogen. However, gaps in knowledge regarding reasons that drive malaria persistence in rural Kudat, Sabah, Northern Borneo remain. This study was conducted to address this knowledge gap, to better understand the complexities of these entangled problems, and to initiate discussion regarding new countermeasures to address them. This study aims to highlight rural community members' perspectives regarding inequities to health relating to P. knowlesi malaria exposure. METHODS: From January to October 2022, a study using qualitative methods was conducted in four rural villages in Kudat district of Sabah, Malaysia. A total of nine in-depth interviews were conducted with community and faith leaders, after the completion of twelve focus group discussions with 26 photovoice participants. The interviews were conducted using the Sabah Malay dialect, audio-recorded, transcribed, and translated into English. The research team led the discussion and analysis, which was approved by participants through member checking at the community level. RESULTS: Participants identified disparity in health as a key issue affecting their health and livelihoods. Injustice in the social environment was also identified as a significant challenge, including the importance of listening to the voices of affected communities in disentangling the social and economic phenomena that can impact malaria control. Specific concerns included inadequate access to health-related resources and degradation of the environment. Participants recommended improving access to water and other necessities, increasing the availability of malaria control commodities in healthcare facilities, and developing sustainable programs to reduce socioeconomic disparities. CONCLUSION: Inequities to health emerged as a key concern for malaria control in rural Kudat, Sabah. A locally targeted malaria programme cantered on improving the social and economic disparities associated with health outcomes, could be a potential strategy for malaria prevention in such areas. Community-level perspectives gathered from this study can be used as a foundation for future discussions and dialogues among policymakers and community members for achieving greater transparency, improving social equity, and interoperability in addressing P. knowlesi malaria control.


Assuntos
Anopheles , Malária , Plasmodium knowlesi , Animais , Humanos , População Rural , Bornéu , Malária/epidemiologia , Malária/prevenção & controle , Macaca , Malásia/epidemiologia
6.
Arch Virol ; 168(6): 173, 2023 Jun 03.
Artigo em Inglês | MEDLINE | ID: mdl-37269384

RESUMO

Rotaviruses are major causative agents of acute diarrhea in children under 5 years of age in Malaysia. However, a rotavirus vaccine has not been included in the national vaccination program. To date, only two studies have been carried out in the state of Sabah, Malaysia, although children in this state are at risk of diarrheal diseases. Previous studies showed that 16%-17% of cases of diarrhea were caused by rotaviruses and that equine-like G3 rotavirus strains are predominant. Because the prevalence of rotaviruses and their genotype distribution vary over time, this study was conducted at four government healthcare facilities from September 2019 through February 2020. Our study revealed that the proportion of rotavirus diarrhea increased significantly to 37.2% (51/137) after the emergence of the G9P[8] genotype in replacement of the G12P[8] genotype. Although equine-like G3P[8] strains remain the predominant rotaviruses circulating among children, the Sabahan G9P[8] strain belonged to lineage VI and was phylogenetically related to strains from other countries. A comparison of the Sabahan G9 strains with the G9 vaccine strains used in the RotaSiil and Rotavac vaccines revealed several mismatches in neutralizing epitopes, indicating that these vaccines might not be effective in Sabahan children. However, a vaccine trial may be necessary to understand the precise effects of vaccination.


Assuntos
Infecções por Rotavirus , Vacinas contra Rotavirus , Rotavirus , Animais , Cavalos , Rotavirus/genética , Malásia/epidemiologia , Prevalência , Filogenia , Antígenos Virais/genética , Diarreia/epidemiologia , Genótipo
7.
BMC Public Health ; 23(1): 1316, 2023 07 10.
Artigo em Inglês | MEDLINE | ID: mdl-37430300

RESUMO

BACKGROUND: The control of Plasmodium knowlesi malaria remains challenging due to the presence of macaque monkeys and predominantly outdoor-biting Anopheles mosquitoes around human settlements. This study aims to explore the barriers and facilitators related to prevention of mosquito bites among rural communities living in Sabah, Malaysia using the participatory visual method, photovoice. METHODS: From January through June 2022, 26 participants were recruited from four villages in Kudat, Sabah, using purposive sampling. Participants were male and female villagers, aged > 18 years old. After photovoice training in the villages, participants documented facilitators of and barriers related to avoiding mosquito bites using their own smartphone cameras, and provided narratives for their photos. Twelve Focus Group Discussions (FGDs) sessions in three rounds were held to share and discuss the photos, and to address challenges to the avoidance of mosquito bites. All discussions were conducted in the Sabah Malay dialect, and were video and audio recorded, transcribed, and analyzed using reflexive thematic analysis. The Ideation Model, a meta-theoretical model of behaviour change, underpinned this study. RESULTS: The most common types of barriers identified by participants included (I) intrapersonal factors such as low perceived threat of malaria, (II) livelihood and lifestyle activities consisting of the local economy and socio-cultural activities, and (III) physical and social environment. The facilitators were categorized into (I) intrapersonal reasons, including having the opportunity to stay indoors, especially women who are housewives, (II) social support by the households, neaighbours and healthcare workers, and (III) support from healthcare services and malaria awareness program. Participants emphasized the importance of stakeholder's support in implementing feasible and affordable approaches to P. knowlesi malaria control. CONCLUSION: Results provided insights regarding the challenges to preventing P. knowlesi malaria in rural Kudat, Sabah. The participation of communities in research was valuable in expanding knowledge of local challenges and highlighting possible ways to overcome barriers. These findings may be used to improve strategies for zoonotic malaria control, which is critical for advancing social change and minimizing health disparities in malaria prevention.


Assuntos
Mordeduras e Picadas de Insetos , Malária , Plasmodium knowlesi , Animais , Humanos , Feminino , Masculino , Adolescente , Malásia , População Rural , Malária/prevenção & controle
8.
Malar J ; 21(1): 373, 2022 Dec 06.
Artigo em Inglês | MEDLINE | ID: mdl-36474243

RESUMO

BACKGROUND: In the last decade Plasmodium knowlesi has been detected in humans throughout South East Asia. The highest risk groups for this infection are males, adults and those performing forest-related work. Furthermore, asymptomatic cases of P. knowlesi malaria have been reported including among women and children. METHODS: Pubmed, Scopus and the Web of Science databases for literature describing asymptomatic P. knowlesi malaria published between 2010 and 2020 were searched. A systematic literature review was conducted to identify studies reporting the prevalence and incidence of laboratory confirmed asymptomatic P. knowlesi cases in humans, their clinical and demographic characteristics, and methods used to diagnose these cases. RESULTS: By analysing over 102 papers, thirteen were eligible for this review. Asymptomatic P. knowlesi infections have been detected in 0.03%-4.0% of the population depending on region, and infections have been described in children as young as 2 years old. Various different diagnostic methods were used to detect P. knowlesi cases and there were differing definitions of asymptomatic cases in these studies. The literature indicates that regionally-differing immune-related mechanisms may play a part on the prevalence of asymptomatic P. knowlesi. CONCLUSION: Differing epidemiological characteristics of asymptomatic P. knowlesi malaria in different regions reinforces the need to further investigate disease transmission mechanics. Effective public health responses to changes in P. knowlesi epidemiology require proactive intervention and multisectoral collaboration.


Assuntos
Doenças Transmissíveis Emergentes , Plasmodium knowlesi , Criança , Humanos , Feminino , Pré-Escolar
9.
Mikrobiyol Bul ; 55(4): 553-567, 2021 Oct.
Artigo em Turco | MEDLINE | ID: mdl-34666655

RESUMO

Rotaviruses are the most common cause of viral gastroenteritis with the highest mortality and morbidity rates in children aged 0-5 years. The aim of this study was to determine the frequency of rotavirus infection in patients whose stool samples were sent to microbiology laboratory to investigate the etiology of diarrhea, to investigate the rotavirus genotypes that are common in our region and G10, G12 genotypes that have recently become common in the world. Fecal samples of 476 patients aged between 0-92 years who applied between November 2016 and February 2018 were studied via immunochromatographic rapid test and enzyme-linked immunosorbent assay (ELISA) methods. ELISA positive samples were studied by nested reverse transcriptase chain reaction (RT-PCR) and genotyped by agarose gel electrophoresis. Rotavirus was found positive in 18.3% and 17% of stool samples by immunochromatographic test and ELISA, respectively. All ELISA positive samples were also detected as positive by RT-PCR. 18.5% of female patients and 15.7% of male patients were found to be positive and rotavirus positivity was not statistically significant between genders. The frequency of rotavirus in different age groups was 23.5% (6-12 years), 17.3% (13-24 months) and 16% (25-36 months). It was determined that rotavirus cases were most common in the spring. G1, G2, G3, G4, G9, G10, and G12 were detected in 37%, 7.4%, 16.1%, 6.2%, 9.9%, 2.5%, 26% of the samples, respectively. G12 was the most common genotype after G1. The most common G and P genotype combination was G1P[8] (17.2%). This was followed by G12P[8] (11.11%) and G3P[8] (11.11%). P[8] (53%) was found to be the dominant P genotype. In this study, it was observed that rotavirus, which is the cause of childhood diarrhea, can also be encountered in advanced ages and even new genotypes that infect humans worldwide may also be the causative agents. Therefore, we concluded that it is important to investigate new genotypes such as G10 and G12 in molecular epidemiological studies.


Assuntos
Gastroenterite , Infecções por Rotavirus , Rotavirus , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Fezes , Feminino , Gastroenterite/epidemiologia , Genótipo , Humanos , Lactente , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Prevalência , RNA Viral , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Rotavirus/genética , Infecções por Rotavirus/epidemiologia , Centros de Atenção Terciária , Adulto Jovem
10.
Arch Virol ; 164(8): 2179-2182, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31111258

RESUMO

We identified two novel circoviruses, HK02976 and HK00220, in oral swabs from bats. The size of their full genome was 2,010 nucleotides (nt). The full-genome sequence of our strains shared 96.1% nucleotide sequence identity with each other, and 39.9%-69.5% identity with bat-associated circoviruses (BatACVs)1-9. Based on the species demarcation threshold for viruses of the family Circoviridae, which is 80% genome-wide nucleotide sequence identity, we have tentatively named this group of viruses "bat-associated circovirus 10" (BatACV10).


Assuntos
Quirópteros/virologia , Circovirus/genética , Animais , Sequência de Bases/genética , Infecções por Circoviridae/virologia , Variação Genética/genética , Genoma Viral/genética , Japão , Fases de Leitura Aberta/genética , Filogenia
11.
Virus Genes ; 54(4): 621, 2018 08.
Artigo em Inglês | MEDLINE | ID: mdl-29774496

RESUMO

This article was unintentionally published twice in this journal, by the same authors. Following should be considered the version of record and used for citation purposes: "Mitui, M.T., Bozdayi, G., Dalgic, B. et al. Molecular characterization of a human group C rotavirus detected first in Turkey, Virus Genes (2009) 39, 2, 157-164, https://doi.org/10.1007/s11262-009-0420-8 ". The duplicate "Mitui, M.T., Bozdayi, G., Dalgic, B. et al. Molecular characterization of a human group C rotavirus detected first in Turkey, Virus Genes (2009), https://doi.org/10.1007/s11262-009-0381-y " is to be ignored. Springer apologizes to the readers of the journal for not detecting the duplication during the publication process.

12.
Mikrobiyol Bul ; 51(2): 191-194, 2017 Apr.
Artigo em Turco | MEDLINE | ID: mdl-28566084

RESUMO

Bufavirus (BuV) is a newly-identified parvovirus in the family of Parvoviridae. Metagenomic analysis of fecal samples from children in Burkina Faso with acute diarrhea showed a highly divergent parvovirus, which was named bufavirus (BuV). The global distribution, epidemiology and genetic characteristics of BuVs infections are obscure. It was first discovered as an agent causing gastroenteritis but the association of BuV infections with various clinical presentations mostly remain to be explored. The aims of this study were to investigate probable impact of BuV in central nervous system infections in a region where it was previously reported to cause human infections and to detect enteroviruses (EV) which are reported as a cause of central nervous system infections in our country. The study was undertaken in three institutions in Ankara province, Central Anatolia, Turkey. Patients, clinically diagnosed with febrile disease and/or central nervous system infections of presumed viral etiology, were enrolled in the study with informed consent. Cerebrospinal fluid specimens were collected from 93 children attended to Gazi University Hospital and Diskapi Yildirim Beyazit Hospital from October 2011-April 2015 and 33 adult patients, attended to Hacettepe University Hospital from June 2012 to March 2013. Clinical history and follow-up, physical examination and standard laboratory findings of the patients were recorded. Nucleic acid extraction was performed via commercially available spin-column assays and complementery DNA (cDNA) synthesis was performed by using commercially available cDNA synthesis kit with randomised hexamer primers. BuV detection was carried out by in house nested-polymerase chain reaction (PCR) utilized with previously-described primers. EV detection was carried out by in house PCR with pan-enterovirus primers. Seventy-four percent (93/126) and 26% (33/126) of the patients were children (0-18) and adults (19-86), respectively. In all patients, bacterial, mycobacterial and fungal cultures were negative, as well as PCR for herpes simplex virus (HSV) types 1 and 2. PCR results of all samples were negative for BuV and EV. This is the first study that evaluates a probable association of BuV and central nervous system infections. Although Parvovirus B19, a well-characterized human pathogen can rarely cause encephalitis, our findings did not confirm such an association for BuV in this preliminary investigation. However, long-term evaluation of individual cases with unknown etiology is required to reveal the relationship of the virus with specific environments.


Assuntos
Viroses do Sistema Nervoso Central/virologia , Infecções por Parvoviridae/virologia , Parvovirus/isolamento & purificação , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Viroses do Sistema Nervoso Central/epidemiologia , Líquido Cefalorraquidiano/virologia , Criança , Pré-Escolar , Humanos , Lactente , Pessoa de Meia-Idade , Infecções por Parvoviridae/epidemiologia , Parvovirus/classificação , Turquia/epidemiologia , Adulto Jovem
13.
Turk J Med Sci ; 47(5): 1463-1471, 2017 11 13.
Artigo em Inglês | MEDLINE | ID: mdl-29151318

RESUMO

Background/aim: To determine the frequency, genotype distribution, and genetic relatedness of adenoviruses in children under 5 years old with diarrhoea and to investigate their distribution according to clinical findings, age, months, and seasons. Materials and methods: Stool samples were collected from 180 children with acute gastroenteritis who presented from July 2007 through June 2011 at the Ankara Training and Education Hospital. Stool samples were analysed by immune chromatographic test (ICT), enzyme immunoassay (EIA), and polymerase chain reaction (PCR). All adenovirus types were determined by nucleotide sequence analysis. A phylogenetic tree was constructed by Mega 6.0 using the neighbour-joining method. Results: Five percent of the samples were positive for adenovirus (9/180) by ICT, 6.1% (11/180) by EIA, and 13.9% (25/180) by PCR. Adenovirus gastroenteritis did not show any differences in age group, sex, month, or season. In this study, 16 (64%) of the PCR positive samples were AdV41, 6 (24%) were AdV40, 2 (8%) were AdV31, and 1 (4%) was AdV7, as determined by nucleotide sequencing. Conclusion: AdV31 and AdV7 were associated with gastroenteritis. Adenovirus serotypes showed a similarity of 80% (20/25) and 20% (5/25) with Asian and American serotypes, respectively.

14.
Arch Virol ; 161(10): 2879-84, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-27444180

RESUMO

This study was done to understand the dynamics of rotavirus genotype distribution in Turkish children. Samples were collected from January 2006 through August 2011 from children at a hospital in Ankara. Rotavirus was detected in 28 % (241/889) of the samples. Genotype G9P[8] was predominant (28 %), followed by G1P[8] (16.3 %) and G2P[8] (15.9 %). G9 was absent in the samples from 2006 and 2007 and then re-emerged in 2008 and increased gradually. Phylogenetic analysis showed that Turkish G9 rotaviruses of the present study formed a sublineage with strains from Italy and Ethiopia, possibly indicating spread of a clone in these countries.


Assuntos
Diarreia/epidemiologia , Genótipo , Infecções por Rotavirus/epidemiologia , Rotavirus/classificação , Rotavirus/genética , Pré-Escolar , Diarreia/virologia , Feminino , Hospitais , Humanos , Lactente , Recém-Nascido , Masculino , Epidemiologia Molecular , Filogenia , Rotavirus/isolamento & purificação , Infecções por Rotavirus/virologia , Turquia/epidemiologia
15.
Emerg Infect Dis ; 20(6): 1037-9, 2014 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-24856373

RESUMO

We identified a new genotype of bufavirus, BuV3, in fecal samples (0.8%) collected to determine the etiology of diarrhea in children in Bhutan. Norovirus GII.6 was detected in 1 sample; no other viral diarrheal pathogens were detected, suggesting BuV3 as a cause of diarrhea. This study investigates genetic diversity of circulating BuVs.


Assuntos
DNA Viral/genética , Diarreia/epidemiologia , Infecções por Parvoviridae/epidemiologia , Parvovirus/genética , Filogenia , Butão/epidemiologia , Pré-Escolar , Diarreia/virologia , Fezes/virologia , Variação Genética , Genótipo , Humanos , Lactente , Recém-Nascido , Infecções por Parvoviridae/virologia , Parvovirus/classificação , Parvovirus/isolamento & purificação , Índice de Gravidade de Doença
16.
J Med Virol ; 86(7): 1159-68, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24105741

RESUMO

The incidence and mortality caused by diarrhea differ among countries. The prevalence of different enteric viruses, their molecular characteristics, and infections with multiple viruses might affect the disease incidence and mortality caused by diarrhea. The objective of this study was to determine the distribution and molecular characteristics of enteric viruses in children with diarrhea in Turkey and Bangladesh. A total of 288 stool samples that were negative for group A rotavirus were collected from children aged <5 years with acute diarrhea who presented to hospitals in Turkey and Bangladesh. The samples were screened for human bocavirus (HBoV), astrovirus (HAstV), norovirus (NoV), and adenovirus (AdV). Phylogenetic analyses of the targeted virus genes were performed. In Turkey, viruses were detected in 87/150 samples (58%), which included 69 (79.3%) with single viruses and 18 (20.7%) with multiple viruses. AdV was the most common virus, followed by HBoV. In Bangladesh, viruses were detected in 123/138 samples (89.1%), which included 29 (23.6%) with single viruses and 94 (76.4%) with multiple viruses. NoV GII was the most common, followed by AdV. The dominant genotypes among the virus species were HBoV 2A, HAstV 1, NoV GI type 1, and AdV 40. For NoV GII, the Hunter variant of genotype 4 in Turkey and genotype 17 in Bangladesh were the most common among the sequenced strains. It was concluded that the distribution of the viruses associated with diarrhea in Turkish and Bangladeshi children was different. Enteric viruses and mixed infections were more prevalent in Bangladesh than in Turkey.


Assuntos
Coinfecção/epidemiologia , Coinfecção/virologia , Diarreia/epidemiologia , Diarreia/virologia , Viroses/epidemiologia , Viroses/virologia , Bangladesh/epidemiologia , Pré-Escolar , DNA Viral/genética , Genótipo , Humanos , Incidência , Lactente , Recém-Nascido , Epidemiologia Molecular , Dados de Sequência Molecular , Filogenia , Prevalência , RNA Viral/genética , Análise de Sequência de DNA , Análise de Sobrevida , Turquia/epidemiologia
17.
BMJ Open ; 14(5): e079963, 2024 May 13.
Artigo em Inglês | MEDLINE | ID: mdl-38740505

RESUMO

INTRODUCTION: Vector borne diseases (VBDs) present significant public health challenges in Southeast Asia (SEA), and the increasing number of cases threatens vulnerable communities. Inadequate vector control and management have been linked to the spread of VBDs. To address these issues, community participation has been proposed as a promising approach to enhance health programmes and control of VBDs. This article outlines a protocol for a scoping review of the published literature on community-participation approaches to control VBDs in the SEA region. The primary research question is 'How does community participation complement the control of VBDs in SEA?' This review aims to provide an overview of various approaches and identify barriers and facilitators to effective implementation. METHODS AND ANALYSIS: The research questions will guide the scoping review. In stage 1, peer-reviewed publications from PubMed, Web of Science and Scopus will be searched using predefined search terms related to community-based approaches and VBDs in the SEA region, English, Indonesian and Malay published between 2012 and 2022. In stage 2, the references from relevant articles will be screened for eligibility. In stage 3, eligible articles will be charted in Microsoft Excel to facilitate the review process, and studies will be characterised based on the investigated diseases; this review will also highlight the methodological context of these studies. In stage 4, a thematic analysis will be conducted to derive meaningful findings from the dataset relevant to the research inquiry, followed by writing the results in stage 5. This scoping review aims to be the first to explore community participation in VBD control in the SEA population, providing valuable insights for future research and stakeholders involved in disease control. ETHICS AND DISSEMINATION: This scoping review does not require ethical approval because the methodology synthesises information from available articles. This review is planned for dissemination in academic journals, conference presentations and shared with stakeholders as part of knowledge sharing among those involved in VBD control.


Assuntos
Participação da Comunidade , Doenças Transmitidas por Vetores , Humanos , Participação da Comunidade/métodos , Sudeste Asiático/epidemiologia , Doenças Transmitidas por Vetores/prevenção & controle , Projetos de Pesquisa , Literatura de Revisão como Assunto , Animais
18.
PLOS Glob Public Health ; 4(1): e0002861, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38289918

RESUMO

Vibrio cholerae remains a notable public health challenge across Malaysia. Although the Malaysian state of Sabah is considered a cholera-affected area, gaps remain in understanding the epidemiological trends and spatial distribution of outbreaks. Therefore, to determine longitudinal and spatial trends in cholera cases data were obtained from the Sabah State Health Department for all notified cases of cholera between 2005-2020. A cholera outbreak is defined as one or more confirmed cases in a single locality with the evidence of local transmission. All records were geolocated to village level. Satellite-derived data and generalised linearized models were used to assess potential risk factors, including population density, elevation, and distance to the sea. Spatiotemporal clustering of reported cholera cases and zones of increased cholera risk were evaluated using the tau statistic (τ) at 550m, 5km and 10km distances. Over a 15-year period between 2005-2020, 2865 cholera cases were recorded in Sabah, with a mean incidence rate of 5.6 cases per 100,000 (95% CI: 3.4-7.9). From 2015-2020, 705 symptomatic cases and 727 asymptomatic cases were reported. Symptomatic cases primarily occurred in local Malaysian populations (62.6%, 441/705) and in children and adolescents under 15-years old (49.4%, 348/705). On average, cases were reported in areas with low population density (19.45 persons/km2), low elevations (19.45m) and near coastal areas. Spatiotemporal clustering of cholera cases was identified up to 3.5km, with increased village-level cholera risk within 500m and 5 days of initial case presentation to a health facility (Risk Ratio = 9.7, 95% CI: 7.5-12.4). Cholera incidence has high spatial and temporal heterogeneity within Sabah, with some districts experiencing repeated outbreaks. Cholera cases clustered across space and time, with village-level risk of cholera highest within 5 days and within close proximity to primary case villages, suggesting local transmission.

19.
Data Brief ; 54: 110476, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38725551

RESUMO

Spinal tuberculosis, also referred to as Pott's disease, presents a significant risk of severe paralysis if not promptly detected and treated, owing to complications such as spinal cord compression and deformity. This article presents the genetic analysis of a Mycobacterium tuberculosis STB-T1A strain, isolated from the spine of a 29-year-old female diagnosed with spinal tuberculosis. Genomic DNA was extracted from pure culture and subjected to sequencing using the Illumina NovaSeq 6000 sequencing system. The genome of the M. tuberculosis STB-T1A strain spans 4,367,616 base pairs with a G+C content of 65.56 % and 4174 protein-coding genes. Comparative genomic analysis, conducted via single nucleotide polymorphism (SNP)-based phylogenetic analysis using the Maximum Likelihood method, revealed that the strain falls within the Indo-Oceanic lineage (Lineage 1). It clusters with the M. tuberculosis 43-16836 strain, which was isolated from the cerebrospinal fluid of a patient with tuberculous meningitis in Thailand. The complete genome sequence has been deposited at the National Center for Biotechnology Information (NCBI) GenBank database with the accession number JBBMVZ000000000.

20.
Emerg Infect Dis ; 19(11): 1859-62, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24188380

RESUMO

We identified human bocavirus (HBoV) DNA by PCR in cerebrospinal fluid from adults and children with encephalitis in Sri Lanka. HBoV types 1, 2, and 3 were identified among these cases. Phylogenetic analysis of HBoV1 strain sequences found no subclustering with strains previously identified among encephalitis cases in Bangladesh.


Assuntos
Encefalite/diagnóstico , Bocavirus Humano/classificação , Bocavirus Humano/genética , Infecções por Parvoviridae/diagnóstico , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Proteínas do Capsídeo/genética , Criança , DNA Viral/genética , Encefalite/epidemiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Infecções por Parvoviridae/epidemiologia , Filogenia , Sorotipagem , Sri Lanka/epidemiologia , Adulto Jovem
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