(AP) — British Prime Minister Boris Johnson says he is as “fit as a butcher’s dog” and remains in charge despite being instructed to self-isolate for 14 days after meeting a lawmaker who has tested positive for the coronavirus. Johnson said in a Twitter video message that he has no COVID-19 symptoms and will continue to govern using “Zoom and other forms of electronic communication.” The quarantine comes requirement comes at the start of a crucial week in which Johnson is trying to suppress a new surge in U.K. coronavirus infections, quell turmoil within his Conservative Party and secure a trade deal with the European Union.