SNP MP Margaret Ferrier paid tribute to NHS staff in a Parliament speech after travelling hundreds of miles with Covid-19 symptoms.
The politician demanded support for her constituents as she discussed their coronavirus fears in the House of Commons on Monday.
Ferrier, who is an SNP MP from Rutherglen and Hamilton West, had taken a test after experiencing mild symptoms on Saturday but still used public transport to attend Westminster in London via train.
Then after finding out she was positive on Monday evening she caught another train back to Scotland on Tuesday morning.
The 60-year-old retweeted a video of the speech which heard her praise key workers for their 'care and commitment' during the pandemic.
Ferrier spoke for four minutes in the chamber during a "General debate on Covid-19" - all the while knowing she should have been self-isolating at home.
Ms Ferrier said: "I'd like to start by paying tribute to all NHS key workers and volunteers in my constituency for their care and commitment over the last seven months."
During the four minute speech which began around 7.15pm Ms Ferrier focused on the "economic health" of her constituents, calling for greater financial support.
She has now apologised for the 800 mile round trip after potentially spreading the deadly bug to hundreds of people.
Ferrier confessed to cops earlier today and now faces a fine if her actions are deemed “reckless".
Nicola Sturgeon has branded Ms Ferrier's rule-breaking "utterly indefensible."
She added: "It’s hard to express just how angry I feel on behalf of people across the country making hard sacrifices every day."
The First Minister also backed Ian Blackford - the SNP's Westminster leader - who confirmed he had suspended the whip from the MP.
A Police Scotland spokesperson said: "We are aware of the circumstances and are liaising with our colleagues in the Metropolitan Police Service."
The Commons confirmed she had informed parliamentary authorities of her diagnosis.
"We have closely followed public health guidance on the action to take following a confirmed case of Covid on site," a spokesman said.