Table 2:
TCID
50
based on HA.
Total of positive number (HA result)
Virus dilution
1
10
-1
10
-2
10
-3
10
-4
10
-5
10
-6
10
-7
10
-8
10
-9
10
-10
10
-11
3
3
3
3
1
0
0
0
0
0
0
0