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TK's avatar

"It’s possible to be contagious yet have a negative rapid test. Four of the 30 people in this study spread COVID19 between negative rapid tests." - How, if at all, would you change your recommendations around using rapid tests before you see elderly or at risk people? I think we'd hoped that a negative rapid test meant that at the very least you weren't (very) contagious and you could have some comfort from that before seeing at risk family/friends. This seems to contradict that and is so disheartening.

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MLL's avatar

Is there any evidence to show that fully vaccinated and boosted (if relevant) are taking longer to test positive on rapid antigen tests even though they end up truly being covid positive? I know of 4 instances now among two different families where individuals continuously tested negative on serial testing but ultimately were positive on days 7 - 12 after exposure. Given how virulent omicron is reported to be and the replication of it in a human system being more rapid, is this just a fluke or do vaccines play a role in trying to shut the incoming virus down but ultimately succumb to its high replication rate? For the record, all illness in these individuals was mild and short-lived.

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