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NNorovirus: from Norwalk to genotypes

Norovirus ? A very-low-dose gut virus of schools and ships — soap and bleach surfaces, not alcohol-gel faith.

Winter vomiting disease had a clinical name before it had a particle. Microscopy and then sequencing filled the file.

The International Committee on Taxonomy of Viruses adopted Norovirus as a genus name in 2002, retiring some older Norwalk-like talk.

Timeline

1929Zahorsky winter vomiting

A clinical description of epidemic winter vomiting predates the particle.

1968Norwalk school

An Ohio outbreak becomes the later namesake.

1972EM visualization

Immune electron microscopy shows the Norwalk agent.

1990Genome sequenced

Norwalk virus RNA is sequenced, opening genotype talk.

1990sRT-PCR diagnostics

Stool tests make outbreak confirmation routine in public-health labs.

2002Genus Norovirus

Official naming settles on Norovirus inside Caliciviridae.

2000sCruise reporting rules

Vessel sanitation programmes publish outbreak thresholds and logs.

2010s-20sGII.4 waves

Successive GII.4 variants dominate many global seasons.

History is naming and control, not a growth method.

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