Result0's video: Deadly strain of swine flu arrives in Britain

The strain of swine flu blamed for more than 100 deaths in Mexico has arrived in Britain. Nicola Sturgeon, the Scottish Health Secretary, confirmed tonight that the potentially fatal virus has infected two people. I can confirm that tests have demonstrated conclusively that the two Scottish cases of swine flu are positive, she said. There are now three patients being held in isolation in British hospitals: two tourists who returned from Mexico to Scotland last week, and a Canadian woman hospitalised on a visit to Manchester after displaying flu-like symptoms. Ms Sturgeon said that there were signs of the virus spreading, with seven of the 22 people who had been in contact with the two patients displaying mild symptoms. The seven have given blood samples and have been advised to stay at home. The two infected people were being kept in isolation at Monklands Hospital in Airdrie, Lanarkshire, after showing flu-like symptoms, after a trip to Mexico. They were said to be recovering and had mild symptoms. 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. We remain very encouraged by the fact that outside Mexico everyone who has contracted swine flu has experienced mild symptoms only. Alan Johnson, the Health Secretary, told the House of Commons earlier that eight of the 25 people tested for the virus were declared negative. Fourteen others were still under investigation, but had not been hospitalised.