| http://www.w3.org/ns/prov#value | - stralia had not affected vaccination rates.But there were still areas where rates were lower, particularly among teenagers who needed booster shots.It means there are pockets of susceptibility, he said.Helen Quinn, a research fellow with the centre, said people who were vaccinated but caught whooping cough got a less severe form, but could still pass it on.Age is a big factor with pertussis (wh
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