TABLE 2.
RSV groupa | No. of RSV strains in:
|
% | |||||||
---|---|---|---|---|---|---|---|---|---|
1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | Total | ||
A | 4 | 63 | 62 | 49 | 37 | 61 | 35 | 311 | 58 |
B | 97 | 4 | 30 | 4 | 54 | 7 | 26 | 222 | 42 |
Total | 101 | 67 | 92 | 53 | 91 | 68 | 61 | 533 | 100 |
Chi square: 225.75 (P < 0.01).