Why some vaccinated people can still spread polio – CNN

One case – and evidence in the sewage of greater spread – may not seem significant, and Americans are highly vaccinated against polio, meaning most people are protected from paralysis. According to the latest data from the US Centers for Disease Control and Prevention, more than 92% of children in the United States have received … Read more

One case – and evidence in the sewage of greater spread – may not seem significant, and Americans are highly vaccinated against polio, meaning most people are protected from paralysis. According to the latest data from the US Centers for Disease Control and Prevention, more than 92% of children in the United States have received … Read more