Volume 14, Number 11—November 2008
Dispatch
Novel Human Rhinoviruses and Exacerbation of Asthma in Children1
Table 2
Human rhinoviruses identified in 53 pediatric patients with asthma, March 2003–February 2004, Atlanta, Georgia, USA*
| HRVs |
Receptor-binding group |
No. among all HRV+ patients, n = 53 |
No. among HRV+ case-patients, n = 39 |
No. among HRV+ controls, n = 14 |
|
|---|---|---|---|---|---|
| Virus symptoms,
n = 20 |
No virus symptoms, n = 19 |
||||
| Total no. genotyped† | 29 | 17 | 7 | 5 | |
| Species A | 18 | 12 | 3 | 3 | |
| HRV12 | Major | 1 | 1 | 0 | 0 |
| HRV30 | Minor | 2 | 2 | 0 | 0 |
| HRV36 | Major | 1 | 0 | 1 | 0 |
| HRV39 | Major | 1 | 0 | 0 | 1 |
| HRV43 | Major | 1 | 1 | 0 | 0 |
| HRV44 | Minor | 2 | 1 | 0 | 1 |
| HRV46 | Major | 1 | 1 | 0 | 0 |
| HRV49 | Minor | 2 | 1 | 1 | 0 |
| HRV53 | Major | 1 | 0 | 1 | 0 |
| HRV54 | Major | 1 | 1 | 0 | 0 |
| HRV61 | Major | 1 | 1 | 0 | 0 |
| HRV65 | Major | 1 | 1 | 0 | 0 |
| HRV66 | Major | 1 | 0 | 0 | 1 |
| HRV68 | Major | 1 | 1 | 0 | 0 |
| GA23584‡ |
Unknown |
1 |
1 |
0 |
0 |
| Species B | 3 | 1 | 0 | 2 | |
| HRV48 | Major | 1 | 0 | 0 | 1 |
| HRV99 |
Major |
2 |
1 |
0 |
1 |
| Genogroup C§ |
Unknown |
8 |
4 |
4 |
0 |
| Not genotyped | Unknown | 24 | 3 | 12 | 9 |
*HRV, human rhinovirus; case-patients, asthma patients with exacerbations; controls, asthma patients without exacerbation.
†HRV genotype based on partial virus capsid protein (VP1) gene sequence. Serotype designation based on >90% VP1 amino acid sequence identity with respective prototype strains.
‡Strain GA23584 showed 73.0% amino acid sequence identity with HRV80.
§Genogroup C HRVs form a clade phylogenetically distict from species A and B HRVs.
1Part of the information in this article was presented at the International Conference of the American Thoracic Society, May 16–21, 2008, Toronto, Ontario, Canada.
2Current affilation: California Department of Public Health, Richmond, California, USA.