Table 2.

The date of the specimens collected from this outbreak in the kindergarten in Bao’an district, Shenzhen, China, March 2018

Collection date	Specimen (n)
	Food	Tableware swab	Hand swab of Chef	Anal swab of Chefa	Anal swab of children	Vomitus	Fecal of children
March 4	10	10	6	5	5	–	–
March 14	–	–	–	2d	–	–	4b
March 26	–	–	–	1f	3c	–	–

^aasymptomatic

^b3 of 4 were positive for norovirus, and they were 3 years old, and two in younger class one and one in younger class two

^c2 of 3 were positive for norovirus, and both of them are 3 years old, and on in younger class one and the other in younger class two

^done of two samples was collected from Chef Nei, and Nei’s sample was positive for norovirus

^fthis sample was collected from Chef Nei and positive for norovirus