: the noroviruses: specific virus families," in Fields virology, P.
Los VE comunmente asociados con enfermedad en humanos pertenecen a las familias Adenoviridae (Adenovirus), Caliciviridae
(Norovirus, Sapovirus), Picornaviridae (Enterovirus, virus hepatitis A y Echovirus), Reoviridae (Reovirus y Rotavirus), y Astroviridae (Astrovirus).
Noroviruses, previously called 'small round structured viruses (SRSVs)' or Norwalk-like viruses, are classified in the genus Norovirus of the family Caliciviridae
. Based on sequence analysis of the capsid gene, five genogroups (GI - GV) of NoVs have been identified and human infection has been associated with NoV GI, GII and GIV.
Norovirus is a nonenveloped, single-strand RNA virus of the family Caliciviridae
. It is resistant to drying, freezing, steam, and chlorination, and is the number one cause of acute gastroenteritis, responsible for over 50% of outbreaks in the United States.
The causative agent of the disease had long been called SRSV (Small Round-structured Virus), but now is classified as the member of the Genus Norovirus in the family Caliciviridae
(Green et al.
. 1980 El redescubrimiento de Cryptosporidium llevo a su estudio ultraestructural confirmando su localizacion intracelular, lo que inicialmente se habia cuestionado.
These are single-stranded RNA viruses belonging to the family Caliciviridae
Members of the family Caliciviridae
are small (30-35 nm in diameter), nonenveloped viruses with a single-stranded, positive-polarity RNA genome of 7.4-8.3 kb.
Noroviruses belong to the family Caliciviridae
and can be grouped into five genogroups (GI through GV), which are further divided into at least 34 genotypes.
Norovirus (genus Norovirus, family Caliciviridae
) is an important foodborne illness because it is a major cause of acute gastroenteritis in schoolchildren and the cause of significant absenteeism in the U.S.
Editorial Note: Norovirus (family Caliciviridae
) causes the majority of acute gastroenteritis outbreaks in the United States (2).
NoVs belong to the genus Norovirus in the family Caliciviridae