Inspired by this thread about virus, I remember a ‘factoid’ I heard a while ago. That there are 103 different strains of virus that cause the common cold. As with many viral infections, once a person’s had it, the immune system will recognize it it won’t hit you again. A kid who’s had rubella, measles or mumps won’t get it again, and as I understand it, it’s a good thing to get those as a kid, since adults suffer much worse from them.
It feels like I’ve had a huge amount of common colds in my life. I’m not keeping track, but since I keep getting them, it must mean that each time, it’s a new strain, since my body is already immune to the ones I’ve had.
So back to the factoid. Are there really only 103 strains? Does that mean that when I suffered through them all, I won’t get common cold anymore? And, subsequently, do older people get fewer and fewer common colds?