Fever, shortness of breath and cough are all key COVID-19 symptoms we've been told to look out for throughout the pandemic. However, at least 1 in 5 people who test positive for the virus don't develop any symptoms, and the reason why has remained a mystery — until now.
In a new study published Wednesday (July 19) in the journal Nature, scientists report a possible explanation for why some people don't develop symptoms after catching SARS-CoV-2, the virus that causes COVID-19, and it boils down to variation in a key gene involved in our immune response to viral infection.
