BBCNEWS BBC News January 10, 2022 13:46:00
Covid and half didnt. they looked at the half that did not 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 come to is that it looks like if you have been exposed to this form of the common cold in the past it might be giving you more protection against covid, which is really interesting. it is something scientists have been thinking about for ages but it is one of the first studies suggesti...
Source: archive.org