LONDON (AFP/Reuters) - Britain announced 100,000 new cases of swine flu Thursday, as it rolled out a new hotline that will allow the prescription of anti-viral drugs over the telephone. At least 30 deaths have so far been linked to swine flu here, 26 in England and four in Scotland, according to the latest update from the Department of Health. The figure is unchanged on the previous week. A further 840 people are in hospital in England, including 63 in intensive care, chief medical officer Liam Donaldson told reporters. He described the rise in new cases almost double last weeks figure of 55,000 as a substantial increase but stressed that the majority of patients suffered only mild symptoms. Britain is the worst hit country in Europe by the virus, which was first identified in Mexico. It gave up attempts at containment early on and is now focusing on the best way to treat infected patients. As the outbreak puts a huge strain on health services, health authorities in England unveiled a new dedicated service Thursday to allow diagnosis and the prescription of drugs over the Internet or by telephone. Described by Prime Minister Gordon Brown as the first of its kind worldwide, the phone line will be manned by about 1,500 non-medical staff who will take callers through a series of questions to reach a diagnosis. However, the most serious cases including pregnant women, people with health conditions and very young children will be referred to a doctor. Donaldson conceded last week that the system could be abused by those who wanted to stockpile Tamiflu, but noted each user could only be diagnosed once, and added: We have to trust in the public that they wont. On Thursday, he explained the lack of change in the death toll since last week was due to a new analysis process, which eliminated some people previously thought to have died from the virus and added an equal number of new cases. It is the same numerically but some have gone in and some have gone out, Donaldson said, without giving exact numbers. According to figures released Thursday, 16 percent of the deaths linked to the virus so far were in completely healthy people, which Donaldson described as an encouraging figure, in that it is a minority. About 67 percent of the deaths were in people with severe health problems such as leukaemia, 11 percent with moderate conditions such as diabetes and six percent in those with mild conditions such as high blood pressure. Young people aged under 14 continue to be hit hardest by the virus. One third of the deaths so far have been among the under 15s. Meanwhile, the US govt has bought 195 million doses of H1N1 swine flu vaccine for a possible autumn vaccination campaign, a US federal official said on Thursday. The US Health and Human Services Department has also contracted for 120 million doses of adjuvant, a compound to stretch the number of doses of vaccine needed, the departments Dr. Robin Robinson told a meeting of Food and Drug Administration advisers. Five companies are making H1N1 vaccine for the US market AstraZenecas MedImmune unit, Australias CSL Ltd, GlaxoSmithKline Plc, Novartis AG and Sanofi-Aventis SA. Earlier, an FDA official said vaccine makers were only getting about 30 percent as much vaccine from eggs as they usually get with seasonal influenza vaccine. Robinson said HHS had accounted for this in planning for a possible influenza pandemic. We thought manufacturers would probably get a low or poor yield. That has been borne out, Robinson told the meeting. He said HHS had planned to have 160 million doses available right away, and then 80 million a month afterward. It would take until March at this rate to vaccinate the full US population of 300 million people with two doses each, Robinson said. The five vaccine-making companies will tell the FDA committee later on Thursday about what they have learned as they work with the virus, which spread globally in less than two months. World Health Organization and US health officials have said they want to start vaccinating people against H1N1, alongside regular seasonal flu, in October. The FDA has to approve this vaccine before it can be used but FDA officials indicated earlier on Thursday they would like to speed this process.