Whooping Cough Vaccine Becomes Less Effective Over Time, Study SaysThe modern vaccine for whooping cough becomes less effective as children age, a new study shows, highlighting the need for new vaccines to protect children from the highly contagious disease.
California Lawmakers Advance Tougher Vaccine RulesCalifornia lawmakers have advanced tougher rules for vaccinations even as opponents shouted "we will not comply" from the Senate gallery.
Opponents Spar Over California Vaccine Exemption BillHundreds of opponents of mandatory vaccines are in Sacramento to oppose a California proposal to give state public health officials instead of local doctors the power to decide which children can skip their shots before attending school.
Facebook Will Begin Removing Misinformation About Vaccines From Pages, GroupsFacebook, the world's largest social media site, will soon take aim against anti-vaxers. The company will start by lowering the ranking of groups and pages that spread misinformation about vaccinations in its News Feed and Search options, a representative said Wednesday.