(added on 2016/07/26)
Hepatitis E in Asia 戊型肝炎在亞洲
© 2016 SpatioEpi.com
Each year, 28th July is observed as the World Hepatitis Day. “Elimination” is the theme of the campaign for 2016. There are 5 common hepatitis viruses, named as Hepatitis A, B, C, D and E. Hepatitis E virus (HEV) is one of the 2 viruses transmitted through faecal-oral routes, the other being the more widely known hepatitis A virus. HEV is commonly spread by contaminated water. The prevalence of hepatitis E is especially high in rural areas of East and South Asia countries where water contamination is frequently seen. The other source of infection is contaminated animal meat, including pork and pig liver.
The map shows the seropositive rate of HEV antibody among healthy people in the recent 10+ years in countries of Asia. The positive rate varies from 0.4% (Australia) to 25.7% (Hong Kong), reflecting the degree of past exposure to the virus. Comparison is however cautioned as the methodology of the studies were not the same. A study in Hong Kong showed that male and older age are two factors significantly associated with a higher seropositive rate in the population.
Data for this map was excerpted from systematic reviews in 2010 and 2014 of the World Health Organization.