Table 1.
Numbers of carriers and noncarriers in each residential hall
| Collection time | Carriage status | No. (%)a in hall: |
||||
|---|---|---|---|---|---|---|
| A | B | C | D1/D2 | E | ||
| November 2008 | Noncarrier | 19 (58) | 22 (61) | 7 (22) | 28 (68) | 25 (52) |
| Carrier | 14 (42) | 14 (39) | 25 (78) | 13 (32) | 23 (48) | |
| Total | 33 | 36 | 32 | 41 | 48 | |
| December 2008 | Noncarrier | 13 (50) | 11 (52) | 4 (25) | 7 (64) | 10 (59) |
| Carrier | 13 (50) | 10 (48) | 12 (75) | 4 (36) | 7 (41) | |
| Total | 26 | 21 | 16 | 11 | 17 | |
| February 2009 | Noncarrier | 6 (43) | 9 (47) | 4 (27) | 4 (80) | 11 (52) |
| Carrier | 8 (57) | 10 (53) | 11 (73) | 1 (20) | 10 (48) | |
| Total | 14 | 19 | 15 | 5 | 21 | |
| May 2009 | Noncarrier | 5 (31) | 4 (31) | 6 (43) | 4 (80) | 5 (33) |
| Carrier | 11 (69) | 9 (69) | 8 (57) | 1 (20) | 10 (67) | |
| Total | 16 | 13 | 14 | 5 | 15 | |
a
Dropout rates for the December, February, and May time points were 22, 58, and 52%, respectively, for hall A; 39, 47, and 64% for hall B; 50, 53, and 56% for hall C; 73, 88, and 88% for halls D1/D2; and 65, 56, and 69% for hall E.