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There is no association between using acetaminophen (Tylenol) during pregnancy and the risk of autism spectrum disorder (ASD) or attention-deficit hyperactivity disorder (ADHD) in children, according to a study published today in JAMA Internal Medicine. It adds to the evidence highlighting acetaminophen’s safety during pregnancy. (Holohan, 6/29)

Babies fed with breast milk were less likely to develop ADHD symptoms as preschoolers and elementary students, researchers reported recently in the journal Biological Psychiatry. “We found that the longer a child was exclusively breastfed (up to six months), the lower the level of ADHD symptoms at ages 3, 5 and 8 years,” lead researcher Dr. Berit Skretting Solberg said in a news release. She’s a psychiatrist at the University of Bergen in Norway. (Thompson, 6/30)

The Wyoming Department of Health reported a positive measles case in an unvaccinated adult in Teton County. The person lives and works inside Grand Teton National Park. Following a Thursday hospital discharge, that person is safe and recovering in isolation, said Teton County Public Health Director Dr. Travis Riddell. (Boyd-Fliegel, 6/29)

The Connecticut Department of Public Health has confirmed the state's second case of measles in 2026, this time in a vaccinated Hartford County adult following testing conducted over the weekend. The Department of Public Health said the individual had already received two doses of the MMR vaccine, which combines vaccines for measles, mumps and rubella into a single injection. (Cooney, 6/29)

After confirming 31 new measles cases last week, the Centers for Disease Control and Prevention (CDC) today added 30 new infections to the US total, which has now climbed to 2,134 confirmed cases. The numbers move the needle closer to the 2025 total of 2,288 cases. (Wappes, 6/26)

Adults with long COVID experience more productivity loss on the job and are more likely to leave the workplace altogether compared with people who recover from COVID or never develop persistent symptoms, according to a study published this week in the International Journal of Infectious Diseases. (Bergeson, 6/26)

�������ýҕ�l Health News: Would Hunters Take A Lyme Disease Vaccine? We Asked

It’s tick season, possibly the worst in a decade. More and more Americans are being exposed to these parasites as climate change expands the range where they can survive. That means more people are also exposed to the bevy of health conditions they can cause, such as Rocky Mountain spotted fever, the alpha-gal-triggered red meat allergy, and, most common of all, Lyme disease. For the latter, there may be some additional protection on the horizon. (Sable-Smith, 6/30)