TABLE 2.
Comparison of the clinical and bacteriological responses in volunteers challenged with a V. cholerae O139 frozen inoculum preparation by blood group
| Blood group | No. of volunteers with indicated symptom/total
no. of volunteers (%)
|
Geometric mean diarrhea vol (g)b | Mean incubation time (h) | No. of volunteers with vomiting/total no. of volunteers (%) | Geometric mean titer of quantitative stool culture (CFU/g) (108) | ||
|---|---|---|---|---|---|---|---|
| Diarrhea | >3,000 g of diarrheal stoola | >5,000 g of diarrheal stoola | |||||
| O | 6/6 (100) | 6/6 (100) | 5/6 (83) | 10,353 | 32.1 | 4/6 (67) | 1.82 |
| Non-O | 8/9 (89) | 3/9 (33) | 2/9 (22) | 3,555 | 36.5 | 2/9 (22) | 1.46 |
a
P < 0.05, O versus non-O.
b
P < 0.01, O versus non-O.