An overactive immune response to infection can be deadly. Studying how one key player called tumor necrosis factor, or TNF, induces lethal immune responses could provide new treatment targets.
Coinfections with bacteria can make viral infections even deadlier. Researchers have identified a protein in immune cells that may play a role in fighting both types of pathogens.
We blame the coronavirus for the thousands of deaths, but it is actually a hyperactive immune reaction that is the cause of death. An immunologist explains.