The animal host for SARS-CoV-2 is the . After circulating among these animals in the wild for a long period of time, the virus accumulated mutations that allowed infection of humans.
Question
The animal host for SARS-CoV-2 is the . After circulating among these animals in the wild for a long period of time, the virus accumulated mutations that allowed infection of humans.
Solution
The animal host for SARS-CoV-2 is believed to be bats. However, it is also thought that the virus may have passed through an intermediate host, such as a pangolin, before infecting humans. Here are the steps:
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The SARS-CoV-2 virus originally resided in bats, where it was able to replicate and mutate.
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Over time, the virus accumulated mutations that allowed it to infect other species. This is a common occurrence in the evolution of viruses.
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It is believed that the virus then passed to pangolins, which are often used in illegal wildlife trade and are known to carry coronaviruses.
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In pangolins, the virus continued to mutate and eventually gained the ability to infect humans.
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The virus was then transmitted to humans, likely through close contact with infected pangolins or bats. This could have occurred at a wildlife market, where many different species are often kept in close proximity.
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Once in humans, the virus spread rapidly due to our social behavior and global travel patterns.
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