TABLE 4.

Comparison of clinical severity among outbreak and sporadic cases in NV gastroenteritis

Clinical featureThis study (n = 23)Outbreaka (n = 56)Sporadicb (n = 115), median
MeanRangeMeanRange
Diarrhea (no. of days)6.00-245.70-212
Diarrhea (maximum no./day)4.20-104.10-94
Vomiting (no. of days)1.20-50.90-31
Vomiting (maximum no./day)1.40-51.00-34
Severity score (0-20 points)9.93-157.93-168
  • a Past outbreak in the same infant home in Japan (36).

  • b Sporadic cases in children <2 years of age in Finland (34).