Detection of a group 2 coronavirus in dogs with canine infectious respiratory disease.
An investigation into the causes of canine infectious respiratory disease was carried out in a large rehoming kennel. Tissue samples taken from the respiratory tract of diseased dogs were tested for the presence of coronaviruses using RT-PCR with conserved primers for the polymerase gene. Sequence analysis of four positive samples showed the presence of a coronavirus with high similarity to both bovine and human coronavirus (strain OC43) in their polymerase and spike genes, whereas there was a low similarity to comparable genes in the enteric canine coronavirus. This canine respiratory coronavirus (CRCV) was detected by RT-PCR in 32/119 tracheal and 20/119 lung samples, with the highest prevalence being detected in dogs with mild clinical symptoms. Serological analysis showed that the presence of antibodies against CRCV on the day of entry into the kennel decreased the risk of developing respiratory disease.
Erles
Kerstin
K
Department of Pathology and Infectious Diseases, The Royal Veterinary College, London, UK. kerles@rvc.ac.uk
Toomey
Crista
C
Brooks
Harriet W
HW
Brownlie
Joe
J
D000818:Animals; D000914:Antibodies, Viral / Q000097:blood; D017124:Conserved Sequence; D018352:Coronavirus Infections / Q000662:veterinary* / Q000821:virology; D017939:Coronavirus, Canine / Q000235:genetics / Q000302:isolation & purification*; D018076:DNA, Complementary / Q000032:analysis; D004283:Dog Diseases / Q000097:blood / Q000821:virology*; D004285:Dogs; D015751:Genes, pol; D006389:Hemagglutinins, Viral / Q000032:analysis; D008168:Lung / Q000821:virology; D008562:Membrane Glycoproteins / Q000235:genetics; D008969:Molecular Sequence Data; D010802:Phylogeny; D012141:Respiratory Tract Infections / Q000662:veterinary* / Q000821:virology; D020133:Reverse Transcriptase Polymerase Chain Reaction; D064370:Spike Glycoprotein, Coronavirus; D014132:Trachea / Q000821:virology; D014759:Viral Envelope Proteins / Q000235:genetics
D000914:Antibodies, Viral; D018076:DNA, Complementary; D006389:Hemagglutinins, Viral; D008562:Membrane Glycoproteins; D064370:Spike Glycoprotein, Coronavirus; D014759:Viral Envelope Proteins