Viruses stretch the definition of “alive” in some really weird directions. They don’t carry on nearly as many of the essential life processes as bacteria do, and it turns out to be a lot harder to kill something that’s only kinda-sorta alive in the first place. Antibiotics, for example, typically work by poisoning bacteria, but viruses don’t have that kind of metabolism: you can’t feed poison to something that doesn’t eat.
Latest Answers