Viruses

With wingspans of up to nine feet, California condors are the largest birds in North America.

Bird Flu Vaccine Approved in Emergency Effort to Save California Condors

The virus has set back the endangered birds' recovery, but a newly hatched chick is flu-free and being raised by veterinarians

An electron micrograph of the respiratory syncytial virus (RSV), which kills an estimated 160,000 people worldwide each year.

First RSV Vaccine for Older Adults Approved in U.S.

The shot to combat the potentially deadly virus could be available in the fall, pending a green light from the CDC

A sign for Covid-19 testing in New York City on March 9, 2023.

As Public Health Emergency Ends, CDC Will Stop Tracking Community Levels of Covid-19

The agency will continue to monitor cases of the virus based on hospitalizations and wastewater testing

California condors are the largest birds in North America.

Twenty Endangered California Condors Die Amid Avian Flu Outbreak

Scientists fear the deaths could set back the slow-breeding birds' recovery by at least a decade

A pharmacist delivers a Covid-19 booster shot in Chicago during a clinic for seniors.

When Should I Get Another Covid Booster?

Here’s what you need to know about getting your next vaccine

An analysis of genetic samples taken in 2020 from a market in Wuhan, China, found both the coronavirus and raccoon dog DNA.

Genetic Evidence Ties Covid's Origin to Raccoon Dogs

New data support the theory that the virus causing Covid-19 first spread to humans from animals

A worker catches chickens at a market in Cambodia, where a girl recently died from avian influenza.

Bird Flu Causes the Death of an 11-Year-Old in Cambodia

A father and daughter both contracted avian influenza, the first cases in the country since 2014

Climate change, pollution and biodiversity are all contributing to the rise of drug-resistant super bugs.

'Superbugs' Could Kill Up to Ten Million Additional People Each Year by 2050

A new U.N. report warns that climate change, pollution and biodiversity loss are helping create pathogens that can evade our medications

Personnel bury pelicans that may have died from avian flu in Lima, Peru, on December 7, 2022. At least 585 seals and 55,000 birds have been found dead in Peru, likely due to avian flu.

As Bird Flu Spreads to Mammals, Health Officials Urge Caution

Transmission between minks has called attention to the potential risks to humans, though experts say not to panic

A grizzly bear in Glacier National Park in Montana

Three Grizzly Bears Tested Positive for Avian Flu in Montana

The current outbreak has led to the deaths of more than 52 million birds in the United States

A Covid-19 testing site in New York City on December 9. An estimated 27.6 percent of cases nationwide were caused by the XBB.1.5 variant this week, according to the CDC's most recent data.

What to Know About the 'Most Transmissible' Covid-19 Variant

XBB.1.5 is the fastest-spreading variant in the country, but it is not known to cause more severe illness than previous ones

When flushed, commercial toilets can spew airborne particles at speeds of up to 6.6 feet per second.

Here's What Really Happens When You Flush a Toilet

Using lasers and cameras, scientists visualized the plume of tiny, aerosolized particles ejected from commercial toilets during flushing

Only a quarter of American adults have received their flu shot this year. 

U.S. Flu Hospitalizations Highest in a Decade

The CDC estimates that 120,000 people have been hospitalized since October

This year’s picks include Fresh Banana Leaves, Origin and Starry Messenger.

The Ten Best Science Books of 2022

From a detective story on the origins of Covid-19 to a narrative that imagines a fateful day for dinosaurs, these works affected us the most this year

A rise in cases of severe respiratory illness could be due in part to children returning to school and other public places this year. 

Virus Linked With Rare Polio-Like Condition in Children on the Rise, CDC Warns

This year, there have been 13 confirmed cases of the condition, which weakens muscles and reflexes

Jynneos monkeypox vaccine

U.S. Declares Monkeypox a Public Health Emergency

The announcement comes as nationwide case counts reach 7,000

Monkeypox blood samples

WHO Declares Monkeypox a Global Health Emergency

Five deaths have been attributed to the disease in the Central African Republic and Nigeria in 2022

Poliovirus particles, computer illustration.

First Polio Case in U.S. Since 2013 Detected in New York State

Experts warn that the virus poses a health risk to unvaccinated communities

The vaccine, known as BPL-1357, was developed by experts at the National Institute of Allergy and Infectious Diseases (NIAID) and contains four strains of non-infectious, chemically inactivated avian influenza, thought to be not highly pathogenic.

Universal Flu Vaccine Enters Clinical Trials in Humans

The test will inoculate 100 volunteers with a vaccine that protected mice from lethal doses of six different flu strains

Thousands of Northern Gannets gather nest material as they prepare for the new breeding season on the Bass Rock.

Avian Flu Hits U.K.’s Seabird Colonies

Thousands of wild birds have died

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