(WRAL) A pug named Winston, believed to be the first dog to test positive for COVID-19 in the United States, was likely never infected with the virus, according to new findings from the National Veterinary Services Laboratory.
The United States Department of Agriculture, which oversees the NVSL, said a series of tests were conducted over several weeks after Duke researchers positively identified SARS-CoV-2 — the virus that causes COVID-19 — in Winston’s oral swab.
“While there was a weak detection from the original oral sample, it did not meet the case definition for a positive, and all other testing was negative,” said Lyndsay Cole, a spokesperson for the USDA’s Animal and Plant Health Inspection Service.
The dog and all four members of the McLean family were tested on April 1 at their home in Chapel Hill as part of Duke University’s Molecular Epidemiological Study of Suspected Infection.
Heather McLean, a doctor at Duke, said she and her husband, a doctor at UNC, tested positive for COVID-19 in March. They found out through the study that their son also contracted the virus.
The McLeans found out about Winston’s positive results in late April.
“We weren’t really sure either way. We were curious just like everyone else,” said Heather McLean, when finding out about Winston’s negative results. “Did he have the infection or did he just have the virus in his mouth?”
McLean said it’s possible the detection in Winston’s original swab test was caused by the dog coming in contact with an infected surface or family member.
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