BBCNEWS BBC News January 10, 2022 15:23:00
To the common cold, we think. so, this is not covid, this is a related virus. the theory goes if you have been exposed to one of those cold viruses, could it give you protection against covid? that is what this research has looked into. they took 52 unvaccinated people, in september 2020, before people had vaccines, and half of the people in households of those 52 managed to contract covid and half didn't. they looked at the half that didn't and they had much higher levels of t cells, memory immunity cells linked to previous exposures to common colds and coronaviruses. the conclusion they have...