Male-Dominant Hepatitis A Outbreak Observed among Non-HIV-Infected Persons in the Northern Part of Tokyo, Japan

Author:

Honda Masayuki,Asakura Hiroyuki,Kanda TatsuoORCID,Somura Yoshiko,Ishii Tomotaka,Yamana Yoichiro,Kaneko Tomohiro,Mizutani Taku,Takahashi Hiroshi,Kumagawa Mariko,Sasaki Reina,Masuzaki Ryota,Kanezawa Shini,Nirei Kazushige,Yamagami Hiroaki,Matsumoto NaokiORCID,Nagashima Mami,Chiba Takashi,Moriyama Mitsuhiko

Abstract

Recently, we experienced an outbreak of acute hepatitis A virus (HAV) infection between 2018 and 2020. Herein, we describe this male-dominant HAV infection outbreak observed among non-human immunodeficiency virus (HIV)-infected persons in the northern part of Tokyo, Japan. Clinical information was collected from patient interviews and from medical record descriptions. In the present study, 21 patients were retrospectively analyzed. A total of 90.4 and 33.3% of patients were males, and men who have sex with men (MSM), respectively. The total bilirubin levels and platelet counts tended to be lower in the MSM group than in the non-MSM group. C-reactive protein (CRP) levels tended to be higher in acute liver failure (ALF) patients than in non-ALF patients. Prolonged cholestasis was observed in one patient (4.8%). We also found that 18 HAV isolates belonged to HAV subgenotype IA/subgroup 13 (S13), which clustered with the HAV isolate (KX151459) that was derived from an outbreak of HAV infection among MSM in Taiwan in 2015. Our results suggest that the application of antivirals against HAV, as well as HAV vaccines, would be useful for the treatment and prevention of severe HAV infection.

Funder

Japan Agency for Medical Research and Development

Publisher

MDPI AG

Subject

Virology,Infectious Diseases

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