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COVID-19 and Animals
A novel coronavirus that was first reported in China in December 2019 quickly led to a global pandemic. Named severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus causes COVID-19 in humans and has subsequently devastated economies and healthcare systems worldwide.
Large cats are susceptible to SARS-CoV-2. Image Credit: Milkovasa / Shutterstock.com
Whilst highly contagious between humans, current evidence regarding transmission between animals and humans suggests that animals do not play a significant role in spreading the infection. However, more research is needed to understand how animals are affected by COVID-19 and when human-animal transmission may occur.
SARS-CoV-2 and animals
Two-way transmission on mink farms
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a zoonotic virus one that spilled over from another species to infect and transmit among humans. We know that humans can infect other animals with SARS-CoV-2, such as domestic cats and even tigers in zoos. Oude Munnink
et al. used whole-genome sequencing to show that SARS-CoV-2 infections were rife among mink farms in the southeastern Netherlands, all of which are destined to be closed by March 2021 (see the Perspective by Zhou and Shi). Toward the end of June 2020, 68% of mink farm workers tested positive for the virus or had antibodies to SARS-CoV-2. These large clusters of infection were initiated by human COVID-19 cases with viruses that bear the D614G mutation. Sequencing has subsequently shown that mink-to-human transmission also occurred. More work must be done to understand whether there is a risk that mustelids may become a reservoir for SARS-CoV-2.
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