Why do some people get very sick and even die from Covid-19, while other similar people show no symptoms? Dr. Sanjay Gupta explains.

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We’re now more than seven months into the coronavirus pandemic that has upended the lives of most of Earth’s inhabitants. And while it is true that the scientific community has learned many things about the SARS-CoV-2 virus and the disease it causes, Covid-19, there are also many gaps in our understanding.

Source: cnn news