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I have an 86 year old neighbour - she has just contracted Covid-19 - for the fourth time.
First infection was contracted on the Norwegian Jewel in March 2020, second was during last years Delta wave, third was February's Omicron BA.2 wave, I assume the latest is a Omicron BA.5 infection.
She says she's vaccinated, but I don't know how many doses. Her family, children and grandchildren, have also had a few bouts. Is there any evidence that some people are more susceptible, other than age and frailty, perhaps genetics.
BR
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