Viruses

Intense visions and confusion about the reality of hospitalization can be especially scarring, leaving patients with intrusive thoughts, flashbacks and vivid nightmares. If such responses persist for more than one month and cause functional impairment or distress, it may be diagnosed as PTSD.

Why PTSD May Plague Many Hospitalized Covid-19 Survivors

Scientists warn about the likelihood of post-traumatic stress disorder for patients discharged from the intensive care unit

A COVID testing site at Echo Park Stadium on December 30, 2020 in Parker, Colorado. This site is nearby Ebert County, where the first case of a COVID-19 variant that is thought to be more contagious was detected in the United States.

Colorado and California Report First U.S. Cases of Highly Contagious Covid-19 Variant

First discovered in England, the variant appears to be more transmissible but does not cause a more severe case of the disease

The vaccination effort underway is the biggest in United States history.

Distribution Begins for First Covid-19 Vaccine Authorized in the United States

Pfizer-BioNTech’s vaccine received emergency use authorization from the FDA last week

Children who have been infected with the virus often experience mild or no symptoms at all, making them less likely to get tested.

More Than 1 Million U.S. Children Have Had Covid-19 Since the Start of the Pandemic

Almost 112,000 children tested positive during a one-week period ending on November 12, the largest single week increase in coronavirus cases in kids

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

As countries in the Northern Hemisphere enter flu season, experts are looking to patterns from Southern Hemisphere nations as a source of cautious optimism.

What to Expect When Covid-19 and the Flu Season Collide

Experts weigh in on the necessary steps to ensure a mild flu season during the pandemic

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

University of Arizona leaders were able to prevent a potential Covid-19 outbreak by testing wastewater.

University of Arizona Stops a Covid-19 Outbreak by Following the Feces

After wastewater monitoring detected the virus in a dorm’s sewage, the school discovered and quarantined two asymptomatic infections

Commuters wearing face masks walk to work in Tokyo on April 7.

How a Japanese Museum Is Documenting Life During Covid-19

New exhibition features everyday objects that would have been unfamiliar before the pandemic

A customer talks to a waiter in a mask while eating his meal at a table divided with transparent panels in Bangalore, India.

What Scientists Know About Airborne Transmission of the New Coronavirus

Aerosol experts, from engineers to doctors, weigh in on the ability of tiny droplets to transmit the virus that causes COVID-19

A boy has his temperature checked as he receives a free COVID-19 test in Los Angeles.

What Scientists Know About How Children Spread COVID-19

As communities struggle with the decision over whether to open up schools, the research so far offers unsatisfying answers

Yosemite Valley seen from the Tunnel View lookout point in the Yosemite National Park, California on July 08, 2020. The park's sewage has now tested positive for the presence of the novel coronavirus, suggesting that some of its visitors over the Fourth of July weekend were infected.

Yosemite Sewage Tests Positive for Coronavirus

Test results suggest there were dozens of visitors carrying the novel coronavirus in the park over the Fourth of July weekend

How will SARS-CoV-2 evolve?

How Viruses Evolve

Pathogens that switch to a new host species have some adapting to do. How does that affect the course of a pandemic like COVID-19?

Llamas, alpacas and other camelids produce a special kind of antibody called nanobodies, which may be used to treat and prevent the spread of COVID-19.

Llama Cells Could Help Scientists Create a COVID-19 Treatment

Scientists are re-engineering llama antibodies to neutralize the virus

Together, COVID-19 cases in California, Florida and Texas accounted for one-fifth of new cases in the world and one-third of new cases in the United States on Monday, July 13.

California, Texas and Florida Emerge as COVID-19 Hotspots

Combined, the three states accounted for nearly 20 percent of the world's new cases on earlier this week

John Rogers and his colleague Shuai Xu’s tech startup Sonica Health is submitting the device with a pulse oximeter and its algorithms to the FDA for approval later this month.

This Band-Aid-Like Patch Could Detect Early COVID-19 Symptoms

Northwestern University scientist John Rogers has developed a wearable that adheres to the throat and relays data to a physician

A survey of nearly 1,000 environmental education and outdoor science schools that serve primarily K-12 learners shows that 63 percent of such organizations are uncertain whether they will ever open their doors again, if pandemic restrictions last until year’s end.

Will COVID-19 Spell the End of Outdoor and Environmental Education?

The pandemic has been devastating to the field, according to a recent survey

A worker disinfects a hog pen in Suining in southwest China's Sichuan province in February 2020.

New Swine Flu Strain With Pandemic Potential Isn’t Cause for Alarm

The findings are a reminder not to forget about seasonal viruses, but also shows that virus surveillance systems work

Pooling samples means one test can screen multiple people.

Pooled Testing Could Be the Fastest and Cheapest Way to Increase Coronavirus Screening

Placing swabs from multiple individuals in a single test gets more people diagnosed using fewer supplies

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