herd immunity

Latest Headlines

Latest Headlines

More New Yorkers skipping vaccines on religious grounds

From 2000 to 2011, the proportion of religiously exempt children in New York rose from 23 in 10,000 to 45 in 10,000. In 2000, four counties had religious exemption rates of more than 1%. By 2011, 13 counties had reached this level.

Vaccine choices swayed by social networks

A U.S. study has shown the importance of people's social networks in vaccination choices, with the presence of anti-immunization friends correlating with parents deciding against giving shots.

Herd immunity halts cholera in unvaccinated population in Zanzibar, study shows

On the Tanzanian island of Zanzibar, some individuals may not even need a vaccine to protect them against cholera. Research shows herd immunity has helped guard against the disease in sub-Saharan Africa.

Australia backs plan to give HPV vax Gardasil to boys

For the first time, boys in Australia will receive the Gardasil vaccine, a series of shots typically given to high school-aged girls to prevent HPV, which can lead to cervical cancer in women.