More than 420 anti-science bills attacking longstanding public health protections — vaccines, milk safety and fluoride — have been introduced in statehouses across the U.S. this year. It's part of an organized, politically savvy campaign to enshrine a conspiracy theory-driven agenda into law. An Associated Press investigation found that the wave of legislation has cropped up in most states, pushed by people with close ties to Health and Human Services Secretary Robert F. Kennedy Jr. Around 30 have been enacted or adopted. The effort would strip away protections that have been built over a century and are integral to American lives and society.

Health Secretary Robert F. Kennedy Jr.'s new vaccine advisers added confusion Friday to this fall's COVID-19 vaccinations. For the first time since the shots were developed, the group has declined to recommend their use — instead leaving the choice up to those who want them. The Food and Drug Administration recently put new restrictions on this year's shots from Pfizer, Moderna, and Novavax, reserving them for people over 65 or younger ones at higher risk. The Centers for Disease Control and Prevention advisers declined to recommend that those people seek a shot but narrowly avoided urging states to require a prescrption for those who want one.

COVID-19 activity is rising in much of the country. Data shows overall respiratory virus spread is very low in the U.S. But COVID-19 is rising in most states, with more people of all ages going to emergency rooms because of it. The stratus variant is most common. It can cause a "razor blade" sore throat and is considered a "variant under monitoring" by the World Health Organization, but it is only marginally better at evading people's immune systems. Flu and RSV activity remain very low. Doctors say hot summer weather can drive people indoors where respiratory viruses like to spread.

COVID-19 activity is rising in much of the country. Data released Friday by federal health officials shows overall respiratory virus spread is low. But COVID-19 is rising in many states in the mid-Atlantic, the South, the southeast and on the West Coast. More people of all ages are going to emergency rooms because of COVID-19. Flu and RSV activity remain very low. Doctors say hot summer weather can drive people indoors where respiratory viruses like to spread.

Measles cases in the U.S. are at their highest in more than three decades. The U.S. Centers for Disease Control and Prevention says the U.S. has 1,288 cases since the beginning of the year. That's higher than 2019, when there 1,274 cases driven by 22 outbreaks over 12 months. Eighteen states have seen outbreaks this year. Experts fear the U.S. may lose its status as having eliminated measles. There are also large outbreaks of the vaccine-preventable disease in Mexico and Canada.

U.S. Health Secretary Robert F. Kennedy Jr.'s new vaccine advisory committee endorsed fall flu vaccinations Thursday for just about every American but with a twist: The group says people should only be given shots free of an ingredient antivaccine groups have falsely tied to autism. The seven-member panel, which includes vaccine skeptics, replaced the previous 17-member group earlier this month. Public health officials are worried that ideological decisions could make vaccines less accessible and more expensive for millions of Americans.

U.S. Health Secretary Robert F. Kennedy Jr.'s new vaccine advisory panel plans to revisit long-settled questions about childhood vaccines. On Wednesday, the new committee announced it would be looking into the childhood vaccine schedule and into specific shots like the hepatitis B and MMR-chickenpox combination. Pediatricians and scientists are expressing alarm. The American Academy of Pediatrics criticized the committee, calling its process "no longer credible." The panel also discussed COVID-19 vaccines and shots that protect infants from RSV.

For many Americans, it's not clear how easy getting a COVID-19 vaccination will be. Health Secretary Robert F. Kennedy Jr. recently said the shots are no longer recommended for healthy children and pregnant women, usurping a decision normally made by scientific experts. Days later, the Centers for Disease Control and Prevention said healthy children "may" get COVID-19 vaccinations, removing stronger language that they "should" get them — and CDC's website now has no advice for pregnant women. The biggest questions are whether people can get a vaccine even if it's not recommended for them — and if insurance will pay.

The nation's top public health agency has posted new recommendations that healthy children and pregnant women may — but no longer should — get COVID-19 vaccinations. The change comes days after U.S. Health Secretary Robert F. Kennedy Jr. announced that COVID-19 vaccines will no longer recommended for healthy children and pregnant women. Kennedy announced the coming changes in a 58-second video posted on the social media site X on Tuesday. No one from the CDC was in the video, and CDC officials have referred questions about the announcement to Kennedy and the U.S. Department of Health and Human Services.

A new variant of COVID-19 is circulating in parts of the world and may be driving an increase in cases in the eastern Mediterranean, Southeast Asia and western Pacific regions. The World Health Organization said Wednesday the new variant called NB.1.8.1 is increasing globally and in mid-May had reached nearly 11% of sequenced samples. Current vaccines are expected to remain effective and there's nothing to suggest that the disease associated with the variant is more severe. Airport screening in the United States has detected the new variant in international travelers arriving in California, Washington state, Virginia and New York.