My understanding is that part of the reason you were advised not to LFT for 90 days after infection was that it was assumed the chance of a false positive was significantly greater than the chance of a reinfection. This may not be the case with Omicron, particularly a Delta to Omicron reinfection.
This is a separate point to why it is assumed someone still turning up positive LFTs 11 days+ after first symptoms is not considered an infection risk. My hunch is the same as Greenbank's, and that it's more likely than not that you are still infectious to a degree.
Those churning out long term positive LFTs (20 days plus for instance) are a headscratcher though.
My understanding is that part of the reason you were advised not to LFT for 90 days after infection was that it was assumed the chance of a false positive was significantly greater than the chance of a reinfection. This may not be the case with Omicron, particularly a Delta to Omicron reinfection.
This is a separate point to why it is assumed someone still turning up positive LFTs 11 days+ after first symptoms is not considered an infection risk. My hunch is the same as Greenbank's, and that it's more likely than not that you are still infectious to a degree.
Those churning out long term positive LFTs (20 days plus for instance) are a headscratcher though.