Can you get re-infected a month after Covid?

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My OH had covid beginning of December, fever, sore throat, loss of test, positive PCR.

He's now got a sore throat again, temperature, (he still can't taste properly), headache and fatigue.

We've no LFD's left but can probably pick some up tomorrow - but I'm just wondering if it's possible for him to have caught covid again? He also has a bit of a rash on his legs and stomach.

Surely if you've had covid had the 2 vaccines and booster - that should be you more or less unable to catch it again?

Thanks.

Guidance from 21/12/21 to nhs/care homes stops nhs staff testing with lft or pcr because recent studies show testing within 90 days almost always picks up old infection. Its massively likely hes lapsing from first infection - i was sick 3 weeks, some good and some bad days.

I would not trust a positive lft or pcr ow unless he knows he's had negative tests inbetween

"The previous policy to continue LFD testing following a positive PCR
result was because although very unlikely, it is possible to be reinfected within 90 days. However based on the latest testing data and
clinical advice, the policy has now changed.
The clinical view is that during this 90 day window from a positive test,
given the low rate of reinfection during this window, it is significantly
more likely that a positive LFD test would be a false result, rather than
someone being re-infected, causing people to isolate unnecessarily.
Therefore we are now stopping the regular testing using LFD during
this 90 day period. The individual should return to the regular LFD and
PCR regime once 90 days has passed."

Thanks Watapalava much appreciated - I'm guessing if it's his previous infection he's not actually able to pass it on to anyone else?

Re infection is more common with Omicron unfortunately

no people can test positive for ages and be unwell but not necessarily transmitting. He does have a temp tho so he may have new infection but hard to tell. Has he been completely well otherwise inbetween? 4 weeks is not unheard of for a normal covid infection to last

Yes you can. I’m not in the UK but there was a young woman on the news yesterday who caught covid twice in one month (nov/dec). Doctor said he’s not at all surprised, they were likely different strains.

Start of December more likely been Delta that’s when I had it Omicorn just in news and numbers very low though speeded up. Very likely has new infection. Delta and Omicorn are very different Delta will not give protection against it. The booster helps with serious symptoms and hospitalisation not to stop you catching it. Does sound like new Infection

Reading it again, the specialist doctor said that the immunity from the vaccine and infection probably wasn’t strong enough not to get infected again. It’s not common, but can happen.

Depends whether the first one was omicron or delta. If the first one was delta then it's reasonably plausible that he'd have caught omicron.

Oh dear let's hope it's not more self-isolation if it is.