EHEC O111:H8 strain and norovirus GII.4 Sydney [P16] causing an outbreak in a daycare center, Brazil, 2019

BMC Microbiology

Table 1 Distribution of symptomatic cases among children, stratified by daycare center class

Class^a	Total no. of children	No. (%) of affected children	Symptomatic cases
Class^a	Total no. of children	No. (%) of affected children	Severe cases^b	EHEC-positive^d	Norovirus-positive
Baby	12	5 (41.7%)	2	0	3
1	16	0 (0)	0	0	0
2	20	5 (25%)	3	2	1
3A	19	1 (5.3%)	1	0	1
3B	19	1 (5.3%)	0	0	0
4	18	0 (0)	0	0	0
5	19	2^c (10.5%)	0	0	0
Total	123	14	6	2	5

^aDistributed according to age. ^bChildren diagnosed with hemolytic uremic syndrome, hemorrhagic colitis, or diarrhea. ^cNorovirus was not investigated in one case. ^dEnterohemorrhagic Escherichia coli (EHEC) was isolated from a child with hemolytic uremic syndrome and a child with diarrhea. Staff members from classes 2 and 3A were also affected

ISSN: 1471-2180