Table 4 Probability that viruses in clusters of outbreaks differ from the population of circulating viruses (genogroup II4)
Clustera | Common Sequence | Common sequence in cluster/total sequenced specimens in cluster | Common sequence in rest of population/total sequenced specimens in rest of population | Fisher's exact test (P-value) |
|---|---|---|---|---|
1 | 1A | 60% (3/5) | 38% (20/55) | 0.36 |
2 | 1A | 67% (2/3) | 38% (21/55) | 0.33 |
3 | 2A | 88% (7/8) | 12% (6/52) | 0.004 |
4 | 1A | 100% (4/4) | 34% (19/56) | 0.018 |