Abstract
We report a norovirus GIV outbreak in the United States, 15 years after the last reported outbreak. During May 2016 in Wisconsin, 53 persons, including 4 food handlers, reported being ill. The outbreak was linked to individually prepared fruit consumed as a fruit salad. The virus was phylogenetically classified as a novel GIV genotype.
Highlights
We report a norovirus GIV outbreak in the United States, 15 years after the last reported outbreak
Nucleic acid was extracted from stool samples collected from 6 ill persons and tested for norovirus GI/GII by real-time quantitative reverse transcription PCR, and 5 GII-positive samples with high cycle threshold values were amplified by conventional RT-PCR targeting a partial region of the 5′ end of open reading frame 2 [4]
3 young children who were positive for GIV in a study in Italy had severe endemic acute gastroenteritis symptoms [10]
Summary
We report a norovirus GIV outbreak in the United States, 15 years after the last reported outbreak. Noroviruses are divided into at least 10 genogroups (G), and viruses in GI, GII, GIV, GVIII, and GIX cause illness in humans [3]. More than 99% of all norovirus outbreaks are caused by GI and GII viruses in the United States [4].
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