Avian Coronavirus in Wild Aquatic Birds

Author:

Chu Daniel K. W.1,Leung Connie Y. H.1,Gilbert Martin2,Joyner Priscilla H.2,Ng Erica M.1,Tse Tsemay M.1,Guan Yi1,Peiris Joseph S. M.13,Poon Leo L. M.1

Affiliation:

1. State Key Laboratory for Emerging Infectious Diseases, Department of Microbiology and Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong Special Administrative Region, China

2. Wildlife Conservation Society, Cambodia

3. HKU-Pasteur Research Centre, Hong Kong Special Administrative Region, China

Abstract

ABSTRACT We detected a high prevalence (12.5%) of novel avian coronaviruses in aquatic wild birds. Phylogenetic analyses of these coronaviruses suggest that there is a diversity of gammacoronaviruses and deltacoronaviruses circulating in birds. Gammacoronaviruses were found predominantly in Anseriformes birds, whereas deltacoronaviruses could be detected in Ciconiiformes , Pelecaniformes , and Anseriformes birds in this study. We observed that there are frequent interspecies transmissions of gammacoronaviruses between duck species. In contrast, deltacoronaviruses may have more stringent host specificities. Our analysis of these avian viral and host mitochondrial DNA sequences also suggests that some, but not all, coronaviruses may have coevolved with birds from the same order.

Publisher

American Society for Microbiology

Subject

Virology,Insect Science,Immunology,Microbiology

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