Disease

According to the World Health Organization, some 42 "candidate vaccines" against the coronavirus that causes Covid-19 are undergoing clinical trials.

What Is the Best Strategy to Deploy a Covid-19 Vaccine?

Mathematicians are modeling different scenarios for a vaccine rollout to see what may work best

An American dog tick (Dermacentor variabilis) on a human finger.

Higher Temperatures Make Some Ticks Pick Humans Over Dogs

The study’s results suggest certain tick-borne diseases could become even more prevalent as climate change heats up the planet

But since 2010, the percentage of children around the world receiving the first vaccine has plateaued at around 85 percent; only 71 percent receive the second dose.

A Resurgence of Measles Killed More Than 200,000 People Last Year

Public health experts worry that vaccine availability will be further stalled by the Covid-19 pandemic

The vaccine candidate produced by Pfizer and BioNTech is stable at minus 94 degrees Fahrenheit, so Pfizer developed a suitcase-sized box that uses dry ice to keep between 1,000 and 5,000 doses that cold for 10 days.

Why the Most Promising Covid-19 Vaccines Require Super-Cold Storage

Both Moderna and Pfizer’s vaccines contain mRNA, which must be stored in frigid conditions

Reconstruction of a titanosaur with ulcerations

First Evidence of Parasites in Dinosaur Bones Found

A team of paleontologists used CT scans and tissue samples to uncover blood pathogens in an infected titanosaur

Researchers from the Georgia Institute of Technology designed a peer-reviewed tool to estimate the risk of attending an event with someone infected with the coronavirus that causes Covid-19.

Five Online Tools for Evaluating Covid-19 Risk Ahead of the Holidays

Of course, the safest option is holding events virtually and skipping in-person, indoor gatherings altogether this year

Canadians gathered around their dining room tables for Thanksgiving on October 12, and two weeks later, authorities reported a spike in Covid-19 cases and hospitalizations.

Covid-19 Cases Surged After Canadian Thanksgiving in October. Will Americans Heed Their Northern Neighbor's Warning?

Two out of five Americans plan to gather in large groups for the holiday, raising public health concerns

Electron microscope image of a human cell (purple) heavily infected with SARS-CoV-2 virus particles (yellow)

Will the Coronavirus Evolve to Be Less Deadly?

History and science suggest many possible pathways for pandemics, but questions remain about how this one will end

The U.S., the Netherlands, Denmark and Spain have all reported coronavirus outbreaks on mink farms.

Denmark Plans to Kill 15 Million Mink to Prevent Spread of Mutated Coronavirus on Fur Farms

At least 12 Danish people have been infected with a SARS-CoV-2 mutation linked to the ferret-like animals

When natural places are destroyed, wildlife are exposed to humans at the edges of their habitat, and they can expand their territories into urban areas, increasing the likelihood of contact with humans.

To Prevent Future Pandemics, Protect Nature

All six of the most recent pandemics have been linked to destructive human activities like deforestation, climate change and the wildlife trade

An illustration of Legionella bacteria, the cause of Legionnaires' disease

Why Reports of Legionnaires' Disease Are on the Rise in the United States

Though less common than in the past, Legionella bacteria and other dangerous pathogens still lurk in drinking water

A father and his daughter engage in a video chat with their doctor.

Should Parents Test for Covid if Their Kid Might Just Have a Cold?

Experts weigh in on when students with runny noses, fevers, and coughs should be quarantined and checked

A woman with anorexia gets ready to weigh herself.

How Patients With Eating Disorders Have Been Affected by the Pandemic

A recent study suggests that worries related to Covid-19 may exacerbate conditions including anorexia and binge eating

The discoveries of these three Nobel laureates “saved millions of lives worldwide,” one Nobel committee member said.

Nobel Prize in Medicine Awarded to Three Scientists Who Discovered Hepatitis C

The contributions of these Nobel laureates helped identify, test, and treat hepatitis C

Woodrow Wilson, seen here at the start of the Paris Peace Conference in January 1919, never publicly acknowledged the pandemic's toll on his country.

What Happened When Woodrow Wilson Came Down With the 1918 Flu?

The president contracted influenza while attending peace talks in Paris, but the nation was never told the full, true story

In southern Italy, two varieties of olive trees, some infected with a disease called Xylella fastidiosa, a bacteria carried from tree to tree by a little bug, and some resisting the infection

Why Tree-Killing Epidemics Are on the Rise

Globetrotting pathogens have caused forest-felling disasters that scientists are doing their best to contain

School children are spaced apart in one of the rooms used for lunch at Woodland Elementary School in Milford, Massachusetts on Sept. 11, 2020.

Exactly How Far Should You Distance From Others to Avoid Covid-19?

The CDC recommends 6 feet or more, the WHO about half that distance, but experts say the science is far from settled

Some Covid-19 patients are reporting that foods including coffee, chocolate and red wine smell awful.

Why Covid-19 Patients Are Suffering From Distorted and Phantom Smells

An increasing number of patients are reporting awful scents that aren’t present

A doctor checks the temperature of a child at a mobile clinic.

What Happens When Children's Covid-19 Symptoms Won't Go Away

Some parents say their kids have been sick for months, and experts aren't sure what's going on

Green lasers pointed at a plastic mannequin head wearing a face shield show how the droplets from a cough or sneeze escape around the sides.

Face Shields and Valved Masks Don't Fully Stop the Spread of Aerosols

A new visualization shows how droplets from a cough or sneeze escape around the sides of a plastic face shield

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