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Báo cáo y học: "Outbreak of chickenpox in a refugee camp of northern Thailan"

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Outbreak of chickenpox in a refugee camp of northern Thailand. | Shimakawa et al. Conflict and Health 2010 4 4 http www.conflictandhealth.eom content 4 1 4 I CONFLICT AND HEALTH SHORT REPORT Open Access Outbreak of chickenpox in a refugee camp of northern Thailand Yusuke Shimakawa1 2 Olivier Camélique2 Koya Ariyoshi1 Abstract Although chickenpox is a generally mild self-limited illness of children it can cause fatal disease in adults. Accumulating reports from tropical countries showed a high prevalence of seronegativity among the adults implying that varicella diseases could become a heavy burden in tropical countries. However in the situation of humanitarian emergencies in tropical areas chickenpox has largely been ignored as a serious communicable disease due to lack of data regarding varicella mortality and hospital admissions in such a context. This is the first report describing an outbreak of chickenpox in a refugee camp of tropical region. In 2008 we experienced a varicella outbreak in ethnic Lao Hmong refugee camp in Phetchabun Province northern Thailand. The attack rate was 4.0 309 7 815 and this caused 3 hospitalizations including one who developed severe varicella pneumonia with respiratory failure. All hospitalizations were exclusively seen in adults and the proportion of patients 15 years old was 13.6 42 309 . Because less exposure to varicella-zoster virus due to low population density has previously been suggested to be one of the reasons behind higher prevalence of susceptible adults in tropics the influx of displaced people from rural areas to a densely populated asylum might result in many severe adult cases once a varicella outbreak occurs. Control interventions such as vaccination should be considered even in refugee camp if the confluence of the risk factors present in this situation. Findings Although varicella occurs universally its epidemiology is remarkably different in tropical and temperate areas 1 . In temperate countries more than 90 of people are infected before adolescence 2 whereas in tropical .