Published in TB and Outbreaks Week, February 10th, 2004
Since extremists shut down a U.N.-backed campaign to eradicate the disease in Kano and two other states in October, Nigerian federal authorities have tested random samples of the vaccine, declaring them free of sterility-inducing hormones.
But authorities in Kano, a hard-hit region in one of the few remaining nations where polio stills cripples children, said their own tests showed questionable substances in some vaccine...
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