This is not true. COVID-19 is unusual because symptoms don’t tend to develop until the second week of the infection, by which time most of the active virus has

This is not true. COVID-19 is unusual because symptoms don’t tend to develop until the second week of the infection, by which time most of the active virus has been neutralized by the body’s immune response. Unlike most viruses, COVID-19 does not have the same selective pressure to become less deadly.