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Which is too bad because we really need to understand how the immune system reacts to the coronavirus.

Blood type is dictated by genes that determine which kinds of molecules, called oligosaccharides, are found on the surface of your red blood cells. Norovirus and a few other viruses use these oligosaccharides to grab onto and infect intestinal cells

While you feel miserable when you have an influenza infection, you can rest assured that it is because your body is fighting hard. It’s combating the spread of the virus in your lungs and killing infected cells.

When it comes to our immune response, genetics takes a back seat to pathogens.