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Animal to Human transmission of Covid-19 is common

Coronaviruses have been found in many animal species. Severe Acute Respiratory Syndrome. According to reports, Coronavirus 2 (SARS-CoV-2), the causative agent of the COVID-19 pandemic, has spread from mammals to humans, originally from animals. The reservoir is a zoonotic pathogen. Although the virus is currently spreading from person to person, angiotensin-converting enzyme receptor 2 (ACE2) that promotes the entry of SARS-CoV-2 exists in many species.

Several reports on pets, USDA-APHIS, have confirmed SARS-CoV-2 infection, including cats and dogs. So far, about 76 cats and 51 dogs have confirmed SARS-CoV-2 infection based on antibody or PCR tests. There has been human-to-animal transmission in zoos and mink farms. This is consistent with previous reports of SARS-CoV-1 infected cats and ferrets and laboratory studies showing experimental SARS-CoV-2 infection in non-human animals. Primates, hamsters, rabbits.

However, little is known about the frequency and risk factors of the spread of SARS-CoV-2 from human to animal. Data is collected by examining the demographic and clinical parameters of humans and animals, contact with animals, and various aspects of their overall environment. The animals were bled to test antibodies against SARS-CoV-2, and nasopharyngeal swabs were collected for viral PCR testing.

The researchers reported interim results from a sample of dogs. Samples were obtained from 67 dogs from 46 families. The results of the nasopharyngeal test can be used for 58 dogs, and the results of the serological test can be used for 51 dogs. According to reports, 14 dogs (23.7%) developed clinical symptoms of COVID-19, and 22 dogs (43.1%) developed SARS-CoV-2 antibodies.

All PCR nasopharyngeal swabs were negative. The survey results show that close contact between humans and animals is common, and most families are aware of and have taken measures to minimize the spread of SARS-CoV-2 between humans and animals after diagnosis. There is no statistically significant correlation between human-animal contact variables and diseases (such as COVID-19 or seropositivity in dogs), but the number of virus-positive people living together in bed and corresponding households is positive trend.

Measures to reduce transmission to pets have shown a protective trend. It was also found that a dog with a disease similar to COVID-19 was seropositive for the virus.

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