UK Prime Minister Boris Johnson tests positive for coronavirus

British Prime Minister Boris Johnson on Friday confirmed on Twitter that he has tested positive for the coronavirus.

In his tweet, Johnson said he had developed "mild symptoms" over the past 24 hours and that he has tested positive for COVID-19.

"I am now self-isolating, but I will continue to lead the government’s response via video-conference as we fight this virus," he added.

ADVERTISEMENT

According to Johns Hopkins University, the United Kingdom has nearly 12,000 confirmed cases of the virus and at least 580 deaths.

Johnson is one of the first heads of state to announce a positive test for the coronavirus, after Monaco's Prince Albert last week, though there have been a few scares

ADVERTISEMENT

On Monday, German Chancellor Angela Merkel reported that she had tested negative for COVID-19. Merkel entered quarantine on Sunday after she found out that her doctor had tested positive for the virus.

There were conflicting reports on whether Brazilian President Jair Bolsonaro had tested positive earlier in the month, but Bolsonaro stated that his tests were negative. Bolsonaro’s spokesman did test positive, however.

This forced White House press secretary Stephanie GrishamStephanie GrishamPence names new press secretary McEnany: Prayer 'made a lot of difference' in 2016 election McEnany stamps her brand on White House press operation MORE to self-quarantine as she had come in contact with the aide when Bolsonaro and his delegation met with President TrumpDonald John TrumpDonald Trump and Joe Biden create different narratives for the election The hollowing out of the CDC Poll: Biden widens lead over Trump to 10 points MORE at his Mar-a-Lago resort in Florida earlier in March.

Trump and first lady Melania TrumpMelania TrumpMelania Trump: 'No reason for violence' in George Floyd protests CNN coronavirus town hall to feature science author David Quammen, 'Empire' actress Taraji Henson The Hill's 12:30 Report - Presented by Facebook - Trump teases social media executive order as a 'big day' for 'fairness' MORE have both tested negative for the virus. Vice President Pence and second lady Karen PenceKaren Sue PenceThe Hill's 12:30 Report - Presented by Facebook - Twitter says Trump violates rules with 'shooting' threat The Hill's 12:30 Report - Presented by Facebook - Trump, Pence travel to Cape Canaveral for SpaceX launch The Hill's 12:30 Report - Presented by Facebook - Crowds return during Memorial Day weekend MORE were tested Saturday after one of the vice president’s staffers tested positive. They were both negative.

Sen. Lindsey GrahamLindsey Olin GrahamSchumer to GOP: Cancel 'conspiracy hearings' on origins of Russia probe Graham announces hearing on police use of force after George Floyd killing In a new cold war with China, America may need to befriend Russia MORE (R-S.C.), who was at the meeting with Bolsonaro, also self-quarantined. Both Grisham and Graham tested negative for COVID-19. Grisham returned to the White House to resume her duties on Wednesday.

Updated at 8:18 a.m.