Health minister and Conservative MP Nadine Dorries says she has been diagnosed with coronavirus.
Ms Dorries, the first MP to test positive, said she had taken all the advised precautions after finding out, and had been self-isolating at home.
It comes as a sixth person died from the virus in the UK, which has a total of 382 cases.
The latest person to die was a man in his early 80s who had underlying health conditions.
Meanwhile, NHS England said it was
scaling up its capacity for testing people for the infection, with the number of cases set to rise.
That will mean 10,000 tests a day can be done - currently 1,500 are being carried out.
Confirmation of any positive test results will also be accelerated with most people getting a result back within 24 hours.
Ms Dorries, the MP for Mid Bedfordshire, said in a statement that Public Health England had started tracing people she had had contact with, and the department and her parliamentary office were closely following its advice.
The 62-year-old, who began her career as a nurse, later tweeted that it had been " pretty rubbish but I hope I'm over the worst of it now ".
But she added she was worried about her 84-year-old mother who was staying with her and began to cough on Tuesday.
It is not known how many meetings Ms Dorries had attended at Westminster or in her constituency in recent days.
The Department of Health said she first showed symptoms on Thursday - the same day she attended a Downing Street event hosted by the prime minister - and had been self-isolating since Friday.
No 10 did not comment on whether Boris Johnson had undergone testing, or whether he will now be tested.
All health ministers, including Health Secretary Matt Hancock, are to undergo testing for the virus, along with other officials who have come into contact with Ms Dorries.
Mr Hancock tweeted that she had "done the right thing" by self-isolating at home and wished "her well as she recovers".
He added: "I understand why people are worried about this disease. We will do all we can to keep people safe, based on the best possible science."


https://www.bbc.co.uk/news/uk-51827356?iorg_service_id_internal=624173547714020%3BAfrJFwrFwFqgpvMS

The disease has no respect

I wish Borris Johnson a long and painful death. May other men raise his child. Nema!

kayusely70:
The disease has no respect

I'm just imagining what will happen if Trump or Boris Johnson tested positive.
It appears Nigeria is managing it better. No death and only 2 cases so far

LuciusX:
I wish Borris Johnson a long and painful death. May other men raise his child. Nema!

Why now, the guy snatch your wife or he deported you from UK?

Hmmmmm

SocialFinance:


Why now, the guy snatch your wife or he deported you from UK?

He's racist and stupid. I prefer the opposing Labour guy, whatsizname. The guy is atleast more sensible than the UK parliament and pro-monarchists all put together.

Good riddance
Hope more conservatives catch the virus

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LuciusX:
I wish Borris Johnson a long and painful death. May other men raise his child. Nema!

When you point a finger at someone, remember the other four are
pointing back at you

.

To those who still believe this is a biological weapon, I can now certainly comfirm that you guys are wrong
To those who say this virus was sent by God and it will have no cure, you already know that Lagos Governmen SAID that they've CURED the Italian man
Heal The World Oh Lord

onlinetrading96:
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Any trouser from Europe now is a possible carrier of coronavirus. Suspend it first