Two people admitted to a Scottish hospital with mild flu-like symptoms after returning from Mexico are due to receive their test results later.
Two people admitted to a Scottish hospital after returning from Mexico have been confirmed as the first British cases of swine flu.
The pair have been undergoing tests at Monklands Hospital, Lanarkshire.
Scottish Health Secretary Nicola Sturgeon said both patients were recovering well.
At least 103 people in Mexico are now suspected to have died after contracting swine flu.
She said seven other people who had been in contact with them were now displaying mild symptoms.
Scottish Health Secretary Nicola Sturgeon stressed the Scottish measures were "precautionary" and the patients were giving no cause for concern.
At least 103 people in Mexico are suspected to have died after contracting swine flu.
She told BBC Radio Scotland's Good Morning Scotland programme the Scottish patients were "not particularly unwell".
Both the Scottish patients were from the Forth Valley area of central Scotland.
We are doing everything we can to ensure that the chances of any infection, should it prove to be the case, is minimised Nicola SturgeonHealth Secretary
They had returned from Mexico on 21 April.
The Scottish Government had been due to start a pandemic flu exercise on Monday which Ms Sturgeon said was a "coincidence". The exercise has since been suspended.
I would reiterate that the threat to the public remains low Nicola SturgeonScottish Health Secretary
On top of the deaths in Mexico, there have been 20 cases of swine flu reported in the US and six in Canada. There are also suspected cases in New Zealand, France, Spain, Israel and Australia.
The patients have been undergoing tests at Monklands Hospital in Airdrie.
Ms Sturgeon said that out of the 22 people who had been identified as being in contact with the infected patients, seven had developed "mild symptoms".
She said this had not been confirmed as swine flu.
These people were receiving drugs at home, not in hospital, she said.
Ms Sturgeon said: "I would reiterate that the threat to the public remains low and that the precautionary actions we have taken over the last two days have been important in allowing us to respond appropriately and give us the best prospect of disrupting the spread of the virus.
"However, this is a developing situation which we continue to monitor very closely, in conjunction with our colleagues in other parts of the UK and the World Health Organisation."
Ms Sturgeon said the Scottish Government was well prepared for any pandemic flu and had significant stockpiles of the antiviral drugs which have been effective in treating swine flu in other countries.
On top of the deaths in Mexico, there have been 40 cases of swine flu reported in the US and six in Canada and one in Spain. There are also suspected cases in New Zealand, France, Israel and Australia.
However no-one has died outside Mexico.
However no-one has died outside Mexico.
A businessman and his family who were quarantined in their home in Northamptonshire after returning from Mexico with flu-like symptoms have been given the all-clear.
Ms Sturgeon said people who had been in contact with the Scottish patients had been given advice and given anti-viral drugs, where appropriate.
"We are doing everything we can to ensure that the chances of any infection, should it prove to be the case, is minimised," she said.
Nicola Sturgeon: 'The patients in question are undergoing further tests'
She added that, in Scotland and across the UK, planning for the eventuality of a pandemic flu outbreak had been going on for some considerable time.
The health secretary said a pandemic framework was in place and there were significant stocks of anti-viral drugs.
"We need to make sure we continue to take all the right steps to ensure we are ready for whatever might occur," she said.
Scotland's leading bacteriologist Hugh Pennington, from Aberdeen University, told BBC Radio Scotland it was "far too early" to speculate about the way the virus was spreading.
He said it was not clear why younger people seemed to be those most at risk.
"We need to look for explanations as to the age groups being affected," he said. "Certainly in the US the elderly don't seem to be to be particularly targeted by this virus."
A government resilience room has been set up and First Minister Alex Salmond met with ministers and health officials on Sunday to discuss the situation.
Ms Sturgeon said anyone who has recently returned from Mexico and is feeling unwell should contact NHS 24 for advice.
