British Prime Minister Boris Johnson said Friday he has tested positive for the coronavirus, while the number of infections in the United States surged to the most in the world and Spain announced a record number of virus deaths overnight.

Johnson’s office said the prime minister was tested after showing mild symptoms for the new coronavirus and is self-isolating and continuing to lead Britain’s response to the pandemic.

“Be in no doubt that I can continue, thanks to the wizardry of modern technology, to communicate with all my top team, to lead the national fightback against coronavirus,” Johnson said in a video message, adding that he had a temperature and persistent cough.

Several weeks ago, Johnson had pledged he would “go on shaking hands with everybody.”

Johnson, 55, was the first leader of a major nation known to have contracted COVID-19; German Chancellor Angela Merkel has been in isolation since her doctor tested positive for the virus, but her first two tests have been negative.

Earlier this week Britain’s Prince Charles said he had tested positive.

British Health Secretary Matt Hancock, who has been at the forefront of nation’s response to the outbreak, also was confirmed to have tested positive for the virus. Britain has 11,658 confirmed cases of the virus, and 578 people have died.

Spain’s Health Ministry reported another 7,800 infections overnight for a total of 64,059. Deaths climbed by 769 to 4,858 — the world’s second highest total after Italy’s 8,214 fatalities.

Spain says 9,444 health workers have contracted the coronavirus. That’s nearly 15% of the total number of cases.

(AP)