I wouldn't panic too much yet.Looking at reports from Australia (in its winter flu season):Swine flu's case-to-fatality rate globally has been less than one per cent, and this compared to the 61 per cent of people who caught and then died from bird flu A(H5N1)."The virus, despite being both novel and infectious does not seem particularly lethal,'' says Dr Senanayake, an infectious diseases physician at Canberra Hospital."This last fact has probably surprised many."Before this outbreak, many experts would have assumed that an influenza virus that crosses the species barrier and is capable of sustained human to human transmission would undoubtedly be highly lethal.''Dr Senanayake says that despite the mild effects of the virus it could still claim scores of lives amongst those vulnerable to the seasonal flu - generally those with underlying chronic illness.On a conservative estimate, it would infect 20 per cent of the Australian population, with up to five per cent of the infected then likely to require hospital care."Around 80,000 to 200,000 people in Australia may ultimately be hospitalised for swine influenza ... with around 8000 deaths,'' Dr Senanayake says."This compared to annual figures of about 18,000 hospitalisations and 3000 deaths directly or indirectly attributable to seasonal influenza.'' http://www.theaustralian.news.com.au/story/0,25197,25650887-12377,00.htmlThis one doesn't appear to have got the characteristics of 1918 flu ... yet.I also came across "old people may be immune to swine flu"http://www.wired.com/wiredscience/2009/06/old-people-may-be-immune-to-swine-flu
Tim Henderson ● 6186d