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. 2002 Jun;8(6):563–568. doi: 10.3201/eid0806.010371

Table 4. Presence of Norwalk-like virus and Clostridium perfringens enterotoxin in stool samples from ill persons, Italy, July 2000.

Sampling date No. examined No. positive for NLV a No. positive for CPE No. positive for NLV + CPE
07/18/01 12 9 0 0
07/20/01 1 1 1 1
07/21/01 8 7 6 6
07/27/01 2 2 0 0
07/28/01 5 3 0 0
Total 28 22 7 7

aAbbreviations used: NLV, Norwalk-like virus; CPE, Clostridium perfringens enterotoxin.