norovirus virus

gastrointestinal gastroenteritis bioinformatics microbiologist contamination inflammation transmission epidemiology hostpathogen microbiology disinfection immunologist replication development diagnostics contagious intestines waterborne healthcare infections infectious sanitation antivirals virologist prevention norovirus particles fecaloral infection foodborne molecular genotypes pathogen virology outbreak shedding immunity symptoms clinical zoonotic stomach leading disease concept illness control biology protein vaccine hygiene highly public health safety capsid immune genome virus viral hand food load rna