. 2015 Jan;28(1):134–164. doi: 10.1128/CMR.00075-14

TABLE 2.

Summary of selected norovirus incubation time studies

Reference	Location^c	Time to index infection (h)	Time to secondary infection (h)
3	USA	48
36	Sweden	34	52
37 ^a	NA	29
38	Netherlands	96^b

Systematic review.

Community onset.

NA, not applicable.