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| Medical officials have relied on the vaccine Prevnar for several years to protect infants against the bacteria, responsible for 80 per cent of pneumococcal disease. Now, they say, it's beginning to fail to protect infants against new strains on the rise. "The vaccine is covering those serotypes that were most prevalent in Alaska and has reduced them dramatically," said Dr. Michael Bruce of the Centre for Disease Control, based at the Arctic Investigations Program in Anchorage. "And now we're seeing other serotypes moving in to fill the niche and so that is worrisome." |
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| The situation doesn't surprise the chief medical officer for the Yukon, Dr. Bryce Larke. "We are starting to see that similar kind of thing that as you protect against one strain of the bacteria, others that didn't formally play a significant role may from time to time produce serious disease," he said. Larke also points to worrisome developments with the Haemophilus Influenza type B vaccine, which he says has been almost miraculous in the fight against meningitis. The disease can lead to brain damage and deafness in infants. Medical officers are now seeing another serious strain, called Type A, and there's no vaccine for it. |











