Abstract
Noroviruses are a common cause of acute gastroenteritis outbreaks in institutions including schools and kindergartens around the world. An outbreak caused by GII.P16-GII.2 norovirus in a kindergarten in Lianyungang, Jiangsu Province, China is reported here. An epidemiological investigation was conducted, and pathogen detection was performed. The descriptive analysis indicated that this outbreak in middle class 1 had a point source. Twenty cases of acute gastroenteritis occurred in this class within a period of 8.5h; the attack rate was 52.6% (20/38). Airborne transmission via the air conditioning unit in a confined restroom could have played a critical role in this outbreak. Sequence analysis of GII-positive samples confirmed that the norovirus GII.P16-GII.2 variant was the etiological agent of this outbreak.
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