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| Vaccines Are Mutating Virus |
The bacteria that
causes whooping cough has mutated, eroding the protection provided by the
vaccine now given to children, scientists warned yesterday. University of NSW
researchers have identified significant changes in the two most common strains
of the bordetella pertussis bacteria, which they also traced back to events in
the late 1990s. They found while the vaccine now in use was effective against
some of the strains circulating in Australia it may no longer protect against
two strains, known as MT27 and MT70.
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