Even before the trip to Durham, how is physically going back to work *after* learning that you are in a COVID+ household (to a degree of confidence where you were anticipating incapacitation) permitted?

"If your [COVID positive wife asks you to return to work while you fear for your ability to be healthy enough to look after your child in the subsequent 24 hours], you should say no."

At the point he returned to work, he was operating at this point under the assumption he was in the pre-symptomatic period. Noonish is about 0.7 days before his symptom onset the next morning. Infectiousness peaks on average... 0.7 days before symptoms. https://www.nature.com/articles/s41591-020-0869-5">https://www.nature.com/articles/...

It is certainly an evidence-based & #39;worst time to return to work& #39;. In his defence, this paper was not officially published for another two weeks, although the idea of presymptomatic stage being particularly infectious one was not new.