New Jersey residents are at a greater risk for measles now that the state no longer has herd immunity. Public health experts ...

Measles is highly contagious among those who are unvaccinated; outbreaks can have severe health consequences in children ...

Kentucky has its first measles outbreak of 2025, as the U.S. case count sits just short of a 30-year high. There have been ...

With a 97% effective vaccine, 3% of children rely on ‘halos’ of herd immunity protection, clinicians say. Declining ...

One expert said new polling shows that more support for vaccines is needed to achieve herd immunity for many diseases.

The U.S. Supreme Court on Friday affirmed a law allowing American citizens or their relatives impacted by terrorist attacks abroad attributed to the Palestinian Authority and the Palestine Liberation ...

Add the 40% to 50% rejection rates among other population subgroups and herd immunity becomes mathematically impossible. Mass vaccination alone won’t achieve herd immunity, as the effect of COVID ...

Livestock economists agree we’re closer to rebuilding the nation’s cowherd, but patience will continue to be key, Dave Bergmeier writes.

Robert F. Kennedy Jr., the health secretary, dismissed 17 scientific advisers to the C.D.C. Critics fear newly appointed members will roll back vaccine recommendations.

It remains unclear following the oral argument whether the panel was convinced President Trump cleared the bar to be allowed to argue in federal court that his hush money conviction should be tossed.

Novavax's experimental COVID-19-influenza combination and standalone influenza vaccines generated a strong immune response in adults aged 65 and older, similar to already approved shots against ...