Contamination of Clams with Human Norovirus and a Novel Hepatitis A Virus in Cameroon

Type Article
Date 2020-09
Language English
Author(s) Bonny Patrice1, 2, 3, Desdouits MarionORCID1, Schaeffer Julien1, Garry PascalORCID1, Essia Ngang Jean Justin2, Le Guyader Soizick1, 4
Affiliation(s) 1 : Laboratoire de Microbiologie, LSEM/SG2M, IFREMER, 44300, Nantes, France
2 : Département de Microbiologie, Université de Yaoundé I, B.P. 812, Yaoundé, Cameroun
3 : Centre de Recherche en Alimentation et Nutrition, IMPM, B.P. 6163, Yaoundé, Cameroun
4 : Laboratoire de Microbiologie, LSEM/SG2M, IFREMER, BP 21105, 44311, Nantes Cedex 03, France
Source Food And Environmental Virology (1867-0334) (Springer Science and Business Media LLC), 2020-09 , Vol. 12 , N. 3 , P. 274-277
DOI 10.1007/s12560-020-09432-2
Keyword(s) Shellfish, Hepatitis A virus, Molecular epidemiology
Abstract

Shellfish constitute an important protein source but may be contaminated by viruses from various origins. A study performed on clams collected in Cameroon showed a high prevalence of norovirus and hepatitis A virus. After sequencing, the hepatitis A virus showed similarities with the genotype V simian strains.

The need for a one-health approach to protect humans from emerging diseases is evident by the high number of microbial pathogens that become zoonotic following insect bites or consumption of contaminated meat. This is particularly well documented for infectious disease transmission from non-human primates to human (Devaux et al. 2019). Environmental issues are critical in such events, especially for RNA viruses that may be excreted at high concentrations by infected hosts and are very resistant outside their hosts (De Graaf et al. 2017). Transmission can occur directly by ingestion of contaminated waters or via contaminated food. For example, shellfish growing in coastal areas or rivers are known to concentrate microorganisms by their ability to filter large volume of waters and thus may favor the transmission of zoonotic strains to humans when consumed.

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