Anybody know when most infectious with new strain ?

[Louiseayork]

Is it before have symptoms , during or after ? Can’t find this info with omicron

If no-one's announced a change, then it'll be the same as earlier variants, want it? So in the 48hours before onset of symptoms and at least that long after (longer if you continue to run a temperature)

Using positive test date instead of onset date if no symptoms

Scientists beginning to say it's after symptoms appear with omicron - so really worth isolating as soon as they do!

I thought the US justification for cutting the isolation period was that you are most infectious in the 48 hours before symptoms and 72 hours after symptoms.

Good question. I'd love to know the answer. 10 days isolation seems so long.

Am not sure the US move and the published justification for it stands up to the science....

There is info on this, I can’t be bothered to search again but read it the other day, they think you test positive within twelve to twenty four hours of catching it, when delta was much longer and you stop being infectious three to four days later, hence the push to reduce isolation to five days,

So many people still seem not to have symptoms/get positive result after being with a known contact 4/5/6 days previously. Though it doesn't mean it's from that contact of course. Same with people living in the same house too though.