Pan-viral screening of respiratory tract infections in adults with and without asthma reveals unexpected human coronavirus and human rhinovirus diversity

Amy Kistler, Pedro C. Avila, Silvi Rouskin, David Wang, Theresa Ward, Shigeo Yagi, David Schnurr, Don Ganem, Joseph L. DeRisi, Homer A. Boushey

Research output: Contribution to journalArticle

203 Scopus citations

Abstract

Background. Between 50% and 80% of asthma exacerbations are associated with viral respiratory tract infections (RTIs), yet the influence of viral pathogen diversity on asthma outcomes is poorly understood because of the limited scope and throughput of conventional viral detection methods. Methods. We investigated the capability of the Virochip, a DNA microarray-based viral detection platform, to characterize viral diversity in RTIs in adults with and without asthma. Results. The Virochip detected viruses in a higher proportion of samples (65%) than did culture isolation (17%) while exhibiting high concordance (98%) with and comparable sensitivity (97%) and specificity (98%) to pathogen-specific polymerase chain reaction. A similar spectrum of viruses was identified in the RTIs of each patient subgroup; however, unexpected diversity among human coronaviruses (HCoVs) and human rhinoviruses (HRVs) was revealed. All but one of the HCoVs corresponded to the newly recognized HCoV-NL63 and HCoV-HKU1 viruses, and >20 different serotypes of HRVs were detected, including a set of 5 divergent isolates that formed a distinct genetic subgroup. Conclusions. The Virochip can detect both known and novel variants of viral pathogens present in RTIs. Given the diversity detected here, larger-scale studies will be necessary to determine whether particular substrains of viruses confer an elevated risk of asthma exacerbation.

Original languageEnglish
Pages (from-to)817-825
Number of pages9
JournalJournal of Infectious Diseases
Volume196
Issue number6
DOIs
StatePublished - Sep 15 2007

Fingerprint Dive into the research topics of 'Pan-viral screening of respiratory tract infections in adults with and without asthma reveals unexpected human coronavirus and human rhinovirus diversity'. Together they form a unique fingerprint.

  • Cite this