North America
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MS campaigners top of the world!
A 52-year-old woman with multiple sclerosis reached the top of Mount Everest over the weekend – the first person with the condition to achieve this. Read more
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Swine flu developed virulence "undetected"
The new swine flu has been circulating in animals undetected for a long time, scientists have reported. Read more
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Arsenic may lie behind Mexican deaths
Arsenic may have been responsible for the high level of deaths from swine flu in Mexico, researchers said today. Read more
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Obese mothers raise childhood asthma risk
Mothers who are obese have a higher than normal rate of asthmatic children, researchers warned yesterday. Read more
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Hope for asthma prevention
A scientific breakthrough, reported last night, may offer hope of preventing asthma in thousands of children who show early symptoms of allergy. Read more
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Air travel and internet challenge new pandemic
The world is more vulnerable than ever to dangerous new strains of flu because of air travel, its most senior health official said yesterday. Read more
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Coral that may save skin
A coral found in the Red Sea may hold the key to a powerful new treatment for skin cancer, researchers have reported. Read more
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Vaccines purchased for flu pandemic
Swine flu appeared to continue its spread over the weekend – passing 100 cases in the UK and reaching 39 countries. Read more
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Bird flu safer, swine version spreads
Bird flu may not be as dangerous to humans as feared, British researchers said, as concern grew about south-east Asia. Read more
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Food and folic acid boost child health
Infant heart defects have decreased since mandatory folic acid fortification of flour and pasta began in Canada, according to a new study. Read more