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People who catch COVID may feel as if they won't get it again, at least not for a long time. Their immune system should be primed to fight it off in the future. Right? Well, let's see.
People who catch COVID may feel as if they won't get it again, at least not for a long time. Their immune system should be primed to fight it off in the future. Right? Well, let's see.
Over the weekend, Covid-19 positivity rate rose to 5.6 per cent, the highest in the last three months.
The findings show the ability of Omicron sublineages to infect those who already have defences against the Covid-19
Some people were found to have had the disease three times, thanks to the Omicron variant, which evades naturally acquired immunity – but not vaccine-derived immunity.