What to Know About mRNA Vaccines

Health Secretary Robert F. Kennedy Jr. has repeatedly questioned the safety of mRNA vaccines against Covid-19. Scientists with funding from the National Institutes of Health were advised to scrub their grants of any reference to mRNA. Around the country, state legislatures are considering bills to ban or limit such vaccines, with one describing them as […]

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5 Places to Turn for Accurate Health Information

Soon after President Donald J. Trump took office for his second term, thousands of health websites run by the federal government that kept the public informed about infectious diseases, mental health, vaccines and more were taken offline. Many eventually returned — in large part because a judge ordered the Centers for Disease Control and Prevention […]

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They Caught the Flu, and Never Came Home

Lauren Caggiano had felt sick for days by the time she tested positive for the flu in an emergency room on a February afternoon. Hours later, she was in the intensive care unit. By 4 in the morning, she was on a ventilator. Ms. Caggiano, a paralegal who lived in Oceanside, Calif., doted on her […]

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As Measles Spreads, Some Doctors See the Virus for the First Time

Until this year, Dr. Leila Myrick had never seen a case of measles. She doesn’t remember professors in medical school talking about the virus. When she saw photos of the characteristic red rash on practice board exams, she flipped back through her textbooks to figure out what it was. “Most practicing doctors, in today’s day […]

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Measles Outbreaks: What to Know About Virus Severity and Vaccine Effectiveness

Measles cases are surging in West Texas, where an outbreak has led to the first U.S. death from the virus in a decade. But in a meeting with President Trump and other cabinet officials this week, the health secretary, Robert F. Kennedy Jr., said the situation was “not unusual.” “We have measles outbreaks every year,” […]

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Do You Need a Measles Booster?

Measles outbreaks in Texas and New Mexico are fueling concerns about the rapid spread of the highly contagious virus. There have been more than 100 measles cases in the United States so far this year, compared to 285 cases in all of 2024. And health officials have warned that they expect more people to fall […]

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Working the Night Shift? Here’s How to Take Care of Yourself.

When Samantha Shaw took a new job as a research technician for a sleep-related study at Brigham and Women’s Hospital in 2021, she was excited to work on a cause that felt personal. Since high school, she said, she had trouble falling and staying asleep, so she jumped at the chance to work with experts […]

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Flu Cases Are Surging

This flu season has been particularly brutal, and it isn’t showing signs of letting up. Since October, there have been at least 24 million cases in the United States. The Centers for Disease Control and Prevention has estimated that there have been as many as 650,000 hospitalizations, which would make it the highest hospitalization level […]

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Are Eggs Safe to Eat as Bird Flu Spreads?

Bird flu is striking chickens across the country, causing shortages and pushing up prices at retailers and restaurants. Last week, one of the nation’s largest egg producers said that hens at one of its Indiana farms had tested positive for avian influenza. Researchers have stressed that bird flu still poses a minimal risk to the […]

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Would You Get Sick in the Name of Science?

One morning in Baltimore last October, a 26-year-old named Alexander Laurenson strode into a small white room to have his arm preyed upon by mosquitoes. As requested, he had not showered the night before to make his skin more attractive to the pests, drawn as they are to body odor. The mosquitoes, for their part, […]

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The Evidence For the Childhood Vaccine Schedule, Explained

Before their immune systems mature, young children are especially vulnerable to infections — and to falling far more ill than adults might with certain common illnesses. That’s why childhood vaccination programs have been such a boon for public health. In the past 30 years, recommended childhood vaccines have prevented an estimated 1.1 million deaths and […]

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A Summer Guide to Covid Testing, Symptoms and Treatment

As new variants of the coronavirus continue to gain traction, doctors and researchers are bracing for a potential rise in cases this summer. KP.2, one of these variants, now accounts for 28.5 percent of cases, and data from the Centers for Disease Control and Prevention shows a small increase in Covid-related emergency room visits and […]

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