The first Britons confirmed to have caught swine flu have been discharged from hospital after recovering.
Newly-wed couple Iain and Dawn Askham, from Polmont near Falkirk, were found to have the virus after returning from a trip to Mexico.
Health Secretary Nicola Sturgeon said one male who had been in contact with the couple was now being treated as a "probable" case after being re-tested.
If he tests positive, it would be the first onward transmission in the UK.
A further 27 possible cases are under investigation in Scotland...
...First Minister Alex Salmond told the Scottish Parliament that a total of 41 people had now been tested and cleared for swine flu, which has been linked to about 160 deaths in Mexico.
He said the person-to-person spread of swine flu had to be anticipated.
"What we have done, it seems, in our identified cases is effectively bought ourselves some time in terms of interrupting the spread of the virus," he said.
"That is obviously very valuable because the more time you can buy, the less people are going to fall ill."
The first minister went on: "The reality now, however, from the World Health Organization is that we must anticipate - however good our measures are, however effective our countermeasures, and however much we try to interrupt the spread of this virus - there is a likelihood there will be cases - further cases, and person-to-person cases."
Tests have confirmed four more cases of swine flu in England, taking the total number of UK patients affected to 32, the Health Protection Agency has said.
The new cases, all associated with travel to Mexico, are adults from Tameside in Greater Manchester, north east Essex, and the West and East Midlands regions of England.
A further 390 suspected cases of the H1N1 virus remain under investigation...
...Earlier, Berkshire East Primary Care Trust (PCT) said it was searching for people who had been on a flight from Mexico with a man who had tested positive for the virus...
...A Department of Health spokeswoman said that of the UK cases, 28 were in England and four in Scotland.
The swine flu outbreak has so far been "contained" in Britain, Health Secretary Alan Johnson said. Mr Johnson acknowledged that there would be more cases in the UK over and above the 15 that had already been confirmed. And he said that the authorities had to be prepared for the possibility of a more serious "second wave" when the colder, wetter weather returns in the autumn.
"Our evidence from all previous pandemics is that you get two phases. You get a first wave that is often very mild and then you get a much more serious wave that comes along in the autumn and the winter," he told BBC1's The Andrew Marr Show. "So we have to not just deal with this outbreak now, but prepare, perhaps, for a second phase further down the line."
Although the World Health Organisation has declared a phase 5 alert level - one step short of declaring a pandemic - Mr Johnson said that the measures taken in the UK had proved effective in limiting the spread of the disease. "Pandemic just describes the geographic spread, it doesn't describe the severity. So far ... I think it is contained," he said.
"There will be more cases. There are 15 confirmed at the moment, that will go up, there is absolutely no doubt of that.
"But at the moment all the evidence is that we can confine it, contain it, and treat it effectively."
The number of cases of swine flu in Scotland has risen seven-fold in a week, and the country now accounts for a quarter of all cases of the virus in the UK.
Scotland has 31 new confirmed cases of swine flu, bringing the total number to 119, the Scottish Government has said.
Among the new cases is a 23-month-old toddler in Lothian, who is not seriously ill and is being treated at home.
None of the new cases are travel-related, and 21 are in the NHS Highland area, which covers Dunoon.
Three patients remain in intensive care at the Royal Alexandra Hospital in Paisley.
A 38-year-old woman at the hospital was said to be in a "critical" condition, while a 45-year-old man and 23-year-old woman were described as "critical but stable" and "stable" respectively.
A further confirmed case - a 44-year-old woman - is in the high dependency unit at the Royal Alexandra.
The Health Protection Agency (HPA) said there were currently 607 possible cases of swine flu still under investigation in UK laboratories...
The number of UK swine flu cases has reached 1,582 after 110 more people in England tested positive for the virus.
The figure does not include the latest diagnosed cases in Scotland, where the virus has spread particularly fast. These will be confirmed later...
Two nine-year-old girls and a man have died after contracting swine flu, health officials have confirmed.
One of the girls was named by relatives as Asmaa Hussain, of Dewsbury in West Yorkshire, who died last Thursday.
The man, who died on Sunday, was named by neighbours, also in Dewsbury, as Abdullah Patel, who taught at the town's Institute for Islamic Education.
The other girl, from south London, also died over the weekend...
The deaths take the number of UK swine flu sufferers who have died to seven.
Earlier experts warned that the number of swine flu cases in the UK could rise to 100,000 a day by the end of next month.
Fourteen patients are now thought to have died in the UK after contracting swine flu, the government has said...
[England's chief medical officer Sir Liam Donaldson said] The number of swine flu cases in London and the West Midlands is approaching epidemic levels.
The UK now has the third highest number of swine flu cases in the world - 9,718 - after the US and Mexico. As of Wednesday, Mexico had 10,262 cases, and there were 33,902 confirmed cases in the US.
"We do have to remain cautious, the virus may change or mutate, but as it stands at the moment, it's not a severe illness for most people but some people can get it very severely," he said.
"That's why getting a vaccine in place is vitally important."
The shift to a treatment phase has important practical implications for the public and the NHS. It means that as of today:
GPs will be able to diagnose swine flu on the basis of patients’ symptoms rather than waiting for laboratory testing.
The routine tracing of people who have come into contact with confirmed cases of swine flu will end.
Schools and other institutions will close only if local circumstances warrant it, for example if a significant number of pupils or teachers are ill.
The way in which the antiviral medicines Tamiflu and Relenza are used and distributed will also change:
The medicines will continue to be offered to all those who show symptoms of swine flu at their doctor's discretion.
They will no longer be given to completely healthy people simply to slow the spread of swine flu.
They will be used for prevention (prophylaxis) only on the advice of a doctor in high-risk groups. These include people with long-term conditions, those over 65, children under five and pregnant women.
Individuals who require antivirals will be given a voucher reference entitling them to pick up the medication at a local collection point.