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The coronavirus variant discovered in India has a new name: Delta.

Never mind all the dots and numbers: The W.H.O. is giving variants Greek letters for names.

A Vaccine Side Effect Leaves Women Wondering: Why Isn’t the Pill Safer?

A Glut of Chinese Masks Are Driving U.S. Companies Out of Business

The C.D.C. says unvaccinated children at U.S. camps can go without masks most of the time when they are outside.

Poor Americans More Likely to Have Respiratory Problems, Study Finds

70 Percent Covid Vaccination Rate May Be in Reach, New Poll Suggests

70 Percent Covid Vaccination Rate May Be in Reach, New Poll Suggests

Scientists Don’t Want to Ignore the ‘Lab Leak’ Theory, Despite No New Evidence

Scientists Don’t Want to Ignore the ‘Lab Leak’ Theory, Despite No New Evidence

Judge Clears Purdue Pharma’s Restructuring Plan for Vote by Thousands of Claimants

Immunity to the coronavirus may persist for years, scientists find.

Immunity to the Coronavirus May Persist for Years, Scientists Find

Moderna Vaccine Highly Effective in Adolescents, Company Says

The C.D.C. won’t investigate all post-vaccine infections, just those that result in hospitalizations or deaths.

C.D.C. Will Not Investigate Mild Infections in Vaccinated Americans

C.D.C. Will Not Investigate Mild Infections in Vaccinated Americans

Children With Covid Inflammatory Syndrome May Overcome Their Most Serious Symptoms

Stop Kissing and Snuggling Chickens, C.D.C. Says After Salmonella Outbreak

New story in Science and Health from TIME: A Blind Patient Regained Partial Sight in a Breakthrough Study, Offering Hope to Millions

C.D.C. Is Investigating a Heart Problem in a Few Young Vaccine Recipients

Severe Covid Is More Often Fatal in Africa Than in Other Regions

The Latest Coronavirus Comes From Dogs

A senior C.D.C. official is departing, the second such resignation this month.

New story in Science and Health from TIME: Depression Is a Pandemic. Let’s Use the Lessons of COVID-19 to Find Treatments

Pfizer and Moderna vaccines are powerfully effective against Covid-19, a C.D.C. analysis confirmed.

Here’s why the C.D.C. changed its mask advice.

Pfizer and Moderna vaccines are powerfully effective against Covid-19, a C.D.C. analysis confirmed.

Pfizer and Moderna vaccines are powerfully effective against Covid-19, a C.D.C. analysis confirmed.

How the United States Beat the Variants, for Now

How the United States Beat the Variants, for Now

‘We have all longed for this moment’: Vaccinated Americans now may go without masks in most places, the C.D.C. says.

Vaccinated Americans now may go without masks in most places, the C.D.C. said.

Many Unvaccinated Latinos in the U.S. Want the Shot, New Survey Finds

Coronavirus Vaccines Protect Pregnant Women, Another Study Suggests

New story in Science and Health from TIME: ExxonMobil Wants You to Take Responsibility for Climate Change, Study Says

New story in Science and Health from TIME: Asia Is Home to 99 of the World’s 100 Cities Facing the Greatest Environmental Challenges

C.D.C. approves Pfizer-BioNTech vaccine for children 12 to 15 years old.

C.D.C confirms more cases of rare blood clot disorder linked to J.&J. vaccine

The Covid-19 Vaccine and Children

A C.D.C. advisory panel recommends the Pfizer-BioNTech vaccine be made available to 12-to-15-year-olds.

C.D.C. Advisers Endorse Pfizer Vaccine for Children Ages 12 to 15

New story in Science and Health from TIME: An Animated Guide to This Year’s Massive Brood X Cicada Emergence

How Hospitals Can Help Patients and the Planet

New story in Science and Health from TIME: A Private Company Is About to Send the First Paying Crew to the International Space Station

Novavax Reports More Delays for Its Covid-19 Vaccine

New Drugs Could Help Treat Obesity. Could They End the Stigma, Too?

Is It Covid or the Flu? New Combo Tests Can Find Out.

The F.D.A. authorizes the Pfizer-BioNTech vaccine for children 12 to 15.

The F.D.A. authorizes the Pfizer-BioNTech vaccine for children 12 to 15.