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Horizontal Transmission of Hepatitis B Virus Genotype C Among Members of a Wrestling Club in Japan

Rare co-existance of disease or pathology

Kazuhide Takata, Eri Yamauchi, Satoshi Shakado, Yoshinari Uehara, Hiromi Fukuda, Ryo Yamauchi, Naoaki Tsuchiya, Hideo Kunimoto, Takashi Tanaka, Keiji Yokoyama, Daisuke Morihara, Yasuaki Takeyama, Shotaro Sakisaka, Fumihito Hirai

Japan Department of Gastroenterology and Medicine, Fukuoka University Faculty of Medicine, Fukuoka City, Fukuoka, Japan

Am J Case Rep 2020; 21:e925044

DOI: 10.12659/AJCR.925044

Available online: 2020-07-21

Published: 2020-08-31


#925044

BACKGROUND: In adulthood, most cases of acute hepatitis B virus (HBV) infection are transmitted either by sexual contact or by contaminated needles, but there are other modes of transmission. We report on three cases of HBV infection among members of a wrestling club.
CASE REPORT: A 19-year-old male wrestling athlete was admitted with acute hepatitis B. Five months later, 2 other men, who were members of the same wrestling club, were diagnosed with HBV infection. The full-length sequences of the HBV DNA were identical in all three cases and classified as subgenotype C2 on phylogenetic analysis. This is the most common genotype found in Japan. No history of sexual or bleeding contact with acquaintances outside the club was noted in any of these cases. This suggests horizontal transmission within the wrestling club.
CONCLUSIONS: The possibility of HBV transmission through bleeding wounds and sweat is a concern in contact sports such as wrestling. Hence, hepatitis B vaccination is recommended for unvaccinated contact-sports players.

Keywords: Hepatitis B virus, Sports Medicine, Wrestling



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