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So this is not covid, it's a related virus. this theory goes that, if you've been exposed to one of those cold viruses in the past, could it be protecting you against covid? that is what this research is looked into. so they took 52 unvaccinated people, and this was way back in september 2020, before people had had the vaccines. so 52, half of those people, in households of those 52, managed to contract covid, and half didn't. they looked at the group, the half that didn't. those ones that didn't have much higher levels of what are called t cells, which are memory cells, memory immunity cells,...

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...

Covid and half didn't. 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 suggesting that. let's get more on the news that 100,00 workers from what the government has categorised as...