TABLE 2.
Yr, mo | No. of strains
|
|
---|---|---|
G9 | G1 | |
2001, March | 2 | |
2001, April | 2 | |
2001, May | 1 | |
2001, June | 1 | 1 |
2001, July | 2 | |
2001, August | 1 | |
2001, September | 2 | |
2001, October | 1 | |
2001, November | 1 | |
2001, December | ||
2002, January | 1a | 3 + 1a |
2002, February | ||
2002, March | 1 | 3 |
2002, April | ||
2002, May | 3 | 1 |
2002, June | 1 | 2 |
Mixed infection, G9 + G1.