Why should we test dogs?
The test should be done in dogs who have had contact with confirmed cases of COVID-19.
There are confirmed cases of infections of dogs by SARS-CoV-2 through transmission of the virus by humans.
However, the viral load retrieved in dogs is considered low.
For more info check the OIE website.
When should dogs take the test?
In general, the test can be performed 5 to 14 days after contact with confirmed cases of COVID-19.
The test is based on the detection of the SARS-CoV-2 genome (RNA) by real-time rRT-PCR techniques in exudates from the nasopharynx and oropharynx. In humans, the viral load is higher during the first days of infection and starts to decrease after approximately 15 days.
What is the specificity and sensitivity of these tests?
The real-time RT-PCR test used is 100% specific and does not cross-react with other human coronaviruses. For molecular diagnosis, two different SARS-CoV-2 proteins are used as targets.
The sensitivity of the molecular test depends on the viral load present in the sample. The viral load is highest 5–7 days after infection and then gradually decreases, becoming significantly reduced after approximately 15 days.