Epidemiology of human adenovirus and molecular characterization of human adenovirus 55 in China, 2009-2012

Qing Bin Lu, Yi Gang Tong, Ying Wo, Hong Yu Wang, En Mei Liu, Gregory C. Gray, Wei Liu, Wu Chun Cao

Research output: Contribution to journalArticlepeer-review

72 Scopus citations

Abstract

Background: Human adenovirus 55 (HAdV-55) has caused recent outbreaks of acute respiratory disease (ARD) among adults and military trainees. The active surveillance for HAdV infections was sparse in China, and current knowledge on the HAdV-type distributions and its molecular evolution is lacking. Objectives: To acquire better understanding on the prevalence and molecular evolution of HAdV-55 strains in China, for an informed strategy for disease control and prevention. Population/Methods: Nasopharyngeal aspirates were collected from hospitalized children with ARTI in Chongqing during 2009-2012. The genotype of HAdV isolates were determined by sequencing the partial hexon and fiber genes. Whole genome sequences of HAdV-55 were obtained for molecular evolution analysis. Results: About 191 (8·55%) HAdV were detected in 2234 children, including 92 (48·2%) with HAdV-7, 72 (37·7%) with HAdV-3, 6 (3·1%) with HAdV-55, 5 (2·6%) with HAdV-5, 4 (2·1%) with HAdV-1, 1 (0·5%) with HAdV-2, and 11(5·8%) with untyped HAdV. Four of these children developed pneumonia, two of whom were diagnosed with severe pneumonia and/or encephalopathy. HAdV-55 isolates clustered with HAdV-11 sequences based on the hexon gene and clustered with HAdV-14 sequences based on the fiber gene and the whole genome. The overall evolutionary rates of hexon gene, fiber gene, and whole genome of HAdV-55 were estimated at 6·2 × 10-5 s/s/y, 8·0 × 10-5 s/s/y, and 1·7 × 10-5 s/s/y, respectively. Conclusions: This study suggested HAdV-55 as an emerging infectious disease pathogen has conserved genetic structure and is closely related to each other. Further molecular investigation based on HAdV-55 of wider origin might facilitate understanding its diversity, dissemination, and transmission in China.

Original languageEnglish (US)
Pages (from-to)302-308
Number of pages7
JournalInfluenza and other respiratory viruses
Volume8
Issue number3
DOIs
StatePublished - May 2014
Externally publishedYes

Keywords

  • Acute respiratory disease
  • Children
  • China
  • Human adenovirus

ASJC Scopus subject areas

  • Epidemiology
  • Pulmonary and Respiratory Medicine
  • Public Health, Environmental and Occupational Health
  • Infectious Diseases

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