Table 2.
General information and frequencies of HRSV subgroup A and B over 3 consecutive seasons in South Korea.
| Period | 2010.5.–2011.4. | 2011.5.–2012.4. | 2012.5.–2013.2. |
|---|---|---|---|
| Total no. of HRSV positive | 234 | 643 | 766 |
| Sample no. of subgroup determined | 172* | 637 | 764 |
| HRSV-A | 20 | 627 | 681 |
| HRSV-B | 152 | 10 | 83 |
| Ratio of A subgroup (%) | 11.6 | 98.4 | 89.1 |
| Sample no. of genotype† determined in HRSV-A | 1 | 167 | 258 |
| GA5 | 0 | 5 | 0 |
| NA1 | 1 | 133 | 14 |
| ON1 | 0 | 29 | 244 |
| Ratio of ON1 (%) | 0 | 17.4% | 94.6% |
HRSV, human respiratory syncytial virus.
∗
Before July 2011, A/B subgroup was tested to random selected samples.
†
During October 2008 to April 2009, nine GA5 and 21 NA1 genotype stains were identified from 30 random selected samples.