The Centers for Disease Control and Prevention said it would join a conference hosted by the World Health Organization in apparent defiance of President Donald Trump's executive order.

This season's influenza vaccine may have been a poor match to a strain of the flu virus that caused many infections this winter, early data released by the Centers for Disease Control and Prevention suggests.

As first measles death is confirmed in the U.S. since 2015, experts warn the current West Texas outbreak is likely to spread.

Vaccine hesitancy may stem from fear, and new research indicates conspiracy theories could play a role in solidifying this reluctance. Fearful individuals might embrace conspiracies to rationalize their decision against vaccination.

Measles is a highly contagious airborne disease caused by a virus, and can be severe or even fatal. According to the U.S. Centers for Disease Control and Prevention (CDC), the best way to protect yourself against measles is to get vaccinated. Here, TIME answers all your questions about the vaccine.

In a small study, Yale researchers have found "differences in immune profiles" among those who have rare reaction to the Covid vaccine.

An early-phase trial found that a personalized vaccine targeted and destroyed cancer cells in nine patients with advanced kidney cancer, effectively wiping out the disease and keeping it at bay

Check state vaccine registries. Some states and major cities have vaccine databases, though they may be incomplete. Contact past providers. Past doctors, schools, universities and even employers like the military may have vaccine documentation.

The United States has joined a WHO-led flu vaccine meeting, despite the Trump administration's plans to withdraw from the global health agency.

COVID-19 vaccines target emerging variants, offering improved protection. Learn about their effectiveness, timing, and safety.

A Memorial Sloan Kettering phase 1 clinical trial revealed an immune response in some pancreatic cancer patients. Study co-author Dr. Vinod Balachandran talks about the impact on future cancer care.

Results from a trial of an mRNA vaccine for pancreatic cancer have shown that the vaccine reduces the chance of the cancer recurring in patients who initially respond.