Abstract
Hepatitis E virus (HEV) is globally prevalent with relatively high percentages of anti-HEV immunoglobulin G-positive individuals in the populations of developing and developed countries. There are two distinct epidemiological patterns of hepatitis E. In areas with high disease endemicity, primarily developing countries in Asia and Africa, this disease is caused mainly by genotypes HEV-1 or HEV-2; both genotypes transmit predominantly through contaminated water and occur as either outbreaks or sporadic cases of acute hepatitis. The acute hepatitis has the highest attack rate in young adults and is particularly severe among pregnant women. In developed countries, sporadic cases of locally acquired HEV-3 or HEV-4 infection are observed. The reservoir of HEV-3 and HEV-4 is believed to be animals, such as pigs, with zoonotic transmission to humans. The affected persons are often elderly, and persistent infection has been well documented among immunosuppressed persons. A subunit vaccine has been shown to be effective in preventing clinical disease and has been licensed in China.
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Abbreviations
- ELISA:
-
Enzyme-linked immunosorbent assay
- HAV:
-
Hepatitis A Virus
- HEV:
-
Hepatitis E Virus
- IgG:
-
Immunoglobulin (Ig) G
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Geng, Y., Shi, T., Wang, Y. (2023). Epidemiology of Hepatitis E. In: Wang, Y. (eds) Hepatitis E Virus. Advances in Experimental Medicine and Biology, vol 1417. Springer, Singapore. https://doi.org/10.1007/978-981-99-1304-6_3
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