COVID-19: humans have infected animals, the virus spreads and mutates among 23 species

Genetic analyses revealed that six of the twenty-three wildlife species in Virginia (United States) showed signs of SARS-CoV-2 infections, the virus responsible for COVID-19. The results indicate a transmission of the virus from humans to animals, with novel mutations.


Researchers discovered that several animal species commonly seen in backyards had antibodies against the virus, indicating previous exposure. Transmission from humans to animals was confirmed, with the virus variants detected in animals matching those circulating among humans.

Animals near hiking trails and public areas with high foot traffic showed the highest exposure rates. Researchers from Virginia Tech emphasize the need for increased monitoring, as the observed mutations could make the virus more transmissible or harmful.

Researchers also examined how the virus adapts to infect new hosts. They noted that SARS-CoV-2 acquired specific mutations in species like opossums, facilitating its transmission to other animals.

Scientists reassure the public that there is no evidence of virus transmission from animals to humans. Nonetheless, vigilance remains crucial, especially for species living close to human activities.


The research was extended to include many common species in Virginia. The results show that the virus is present in various animal populations, necessitating increased monitoring to better understand the transmission dynamics and potential public health implications.

Researchers call for further studies to assess the transmission of the virus between different animal species and from animals to humans. This study demonstrates that SARS-CoV-2 could have a wide range of natural hosts.