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Ending the practice of immunizing all newborns against hepatitis B, as Health Secretary Robert F. Kennedy Jr. has recommended, would sharply increase the number of chronic infections and put more than half of Americans at risk of the disease by age 20, according to a new study published on Monday. (Mandavilli, 10/19)

RFK Jr.’s anti-vaccine agenda — and chicken companies — are holding back the bird flu vaccine. (Torrella, 10/20)

Prosecutors in Idaho have steadfastly maintained that 23-year-old Andrea Shaw murdered her twin toddlers in the bed they shared, rejecting her claims that they died after adverse reactions to childhood vaccines. In a court filing on Friday, they raised the stakes, saying they will seek the death penalty against her. But the defense team indicated that Ms. Shaw would continue with a vaccine injury defense, hiring a lawyer who works with Children’s Health Defense, the anti-vaccine nonprofit founded by the secretary of health and human services, Robert F. Kennedy, Jr. (Miller, 10/19)

As season vaccinations ramp up, Archbishop Thomas Wenski is accusing Florida Attorney General James Uthmeier of "bullying" Catholic schools in a dispute over religious freedom, public health and state scholarship funding. (Kam, 10/19)

Scientists have uncovered a possible explanation for why some people struggle to taste food more than a year after recovering from COVID-19. By examining taste buds from patients with lingering symptoms, researchers discovered molecular abnormalities that weaken the signals responsible for detecting sweet, bitter, and savory flavors. (10/19)

The United States has raised its travel advisory for Kenya, urging Americans to reconsider travel to the East African country due to health and security concerns. The advisory, updated on 19 October, moves Kenya from Level 2 to Level 3, citing risks including Ebola, crime, kidnapping, terrorism, civil unrest and road safety. (10/20)