The European Union, Canada and other developed countries have signed deals to get hundreds of millions of doses of Covid-19 vaccines and boosters over the next two years, furthering a divide between rich and poor countries.

Millions of people with compromised immune systems and their doctors are scrambling to figure out what to do in an evolving science project playing out in real time.

The early-stage trial will explore whether people can be given a booster shot different from their original Covid-19 vaccine to extend a shot’s protection or fight off an elusive variant.

Eye doctors say they’re seeing more children with new or worsening vision problems. Increased screen time, they believe, bears part of the blame.

After searching for years for the right fitness routine that took his prosthetic leg into account, he found what he needed with the basic swim stroke.

Here is the latest on what you need to know about masking and social distancing for children, based on government guidance and the opinions of doctors.

A potential blockbuster, the drug is the first to treat a common cancer mutation called KRAS that researchers struggled for years to target.

The approval for kids 12 to 15 years old will give a boost to the continent’s Covid-19 vaccination campaign at a time when the infection rate has begun falling quickly.

Johnson & Johnson and the FDA expect to announce within days that contamination problems at the plant are resolved, clearing the way for millions more doses to become available.

The company said it is cooperating with the probe of issues at the plant, which has been flagged for deficiencies after FDA inspections and is the subject of employee allegations of document tampering.

The third antibody therapy cleared by the FDA is the latest option for treating patients early in the course of the disease so they can avoid hospitalization.

Google and national hospital chain HCA will work to develop algorithms to help improve operating efficiency, monitor patients and guide doctors’ decisions.

The pharmaceutical industry is backing Germany, Japan and other countries that have opposed waiving Covid-19 vaccine patents, after the Biden administration threw its support behind the proposal.

The agency has asked Sinovac for more details about CoronaVac’s safety and the manufacturing process before deciding whether to recommend it for global use, according to people familiar with the matter.

The inoculations are a sign of progress in fighting the pandemic. Yet many health experts doubt enough people will be immunized to reach herd immunity.

Moderna said its Covid-19 vaccine was effective in children age 12 to 17 in a new study, a finding that could clear the way for a second shot for use in adolescents.

Fitness trackers are often mainly used to count steps but your heart-rate metrics can also be revealing, doctors say.

Two weeks after delivering a healthy baby boy, a WSJ reporter found herself back in the hospital battling a life-threatening infection. Her experience shows the gaps in U.S. postpartum healthcare, doctors say.

New treatment using an advanced technology known as optogenetics has restored limited vision to people blinded by hereditary retinal disease.

The CDC issued new guidance saying vaccinating people should take priority over ensuring every dose in an open vial is used.