Monthly summary tables of influenza virus isolation 1999
|
Month |
No. of specimens |
No. of Isolates |
|
A |
B |
|
H3N2 * |
H1N1 |
H5N1 |
H9N2 |
|
Jan |
1960 |
597 |
1 |
0 |
- |
11 |
|
Feb |
2142 |
720 |
0 |
0 |
- |
20 |
|
Mar |
1316 |
84 |
3 |
0 |
2 |
58 |
|
Apr |
1363 |
62 |
1 |
0 |
0 |
78 |
|
May |
1598 |
40 |
0 |
0 |
0 |
48 |
|
Jun |
1751 |
77 |
0 |
0 |
0 |
49 |
|
Jul |
1729 |
257 |
0 |
0 |
0 |
25 |
|
Aug |
1452 |
182 |
0 |
0 |
0 |
39 |
|
Sep |
1249 |
73 |
0 |
0 |
0 |
58 |
|
Oct |
961 |
18 |
0 |
0 |
0 |
24 |
|
Nov |
980 |
5 |
0 |
0 |
0 |
17 |
|
Dec |
850 |
16 |
5 |
0 |
0 |
10 |
|
Total |
17351 |
2131 |
10 |
0 |
2 |
437 |
Note :
* The predominant strain of influenza virus type A (H3N2) isolated was A/Sydney/05/97-like.
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