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Researchers at Florida International University successfully trained One Betta, a Dutch Shepard, and three other dogs to detect COVID-19 on face masks. The dogs got it right 96% to 99% of the time. Joe Raedle/Staff/Getty Images North America

Dogs can be trained to sniff out COVID-19 – a team of forensic researchers explain the science

A new study found that the child tax credit advance payments immediately helped families who were suffering from food insufficiency. Spencer Platt/Getty Images News via Getty Images

The sunsetting of the child tax credit expansion could leave many families without enough food on the table

The 2021 child tax credit expansion helped lift millions of families with children out of hunger. After those payments ended in December 2021, those families may again face food insufficiency.
The list of SARS-CoV-2 variants – each with its own unique qualities that give it an edge – just keeps growing. Matt Anderson Photography/Moment via Getty Images

Alpha then delta and now omicron – 6 questions answered as COVID-19 cases once again surge across the globe

People are buzzing with questions about the omicron variant and whether it could help usher in herd immunity. A team of virologists deciphers the latest findings.
Nearly 50,000 Americans kill themselves every year, leaving behind millions of family members and friends. svetikd/E+ via Getty Images

How to help those who have lost loved ones to suicide cope with grief during the holidays

Nearly all suicide-loss survivors experience guilt, wondering what they could have done to prevent it. But despite decades of research, experts struggle to identify risk factors and predict suicide.
In the U.S., people were placed into four groups for vaccine access. AP Photo/Lynne Sladky

US vaccine rollout was close to optimal at reducing deaths and infections, according to a model comparing 17.5 million alternative approaches

With limited vaccines available in early 2021, the CDC had to decide which people received vaccines first. With the help of a supercomputer, researchers have shown that the CDC did an excellent job.
Sequencing the genome of a virus gives researchers information on how mutations can affect its transmissibility and virulence. catalinr/iStock via Getty Images Plus

Genomic sequencing: Here’s how researchers identify omicron and other COVID-19 variants

DNA sequencing has allowed researchers to catch new COVID-19 variants hours after receiving the first positive test sample.
Health and well-being come in many forms, including finding solitude and connection with nature. Pheelings Media/iStock via Getty Images Plus

The COVID-19 pandemic has inspired new health habits for these 4 scholars – here’s what they put into practice and why

The new year is a perfect time to adopt new health habits and routines. These four scholars reflect on the ways that they overcame the pandemic blues to get fit.
A positive COVID-19 test is the first step in the process. Paul Hennessy/SOPA Images/LightRocket via Getty Images

From delta to omicron, here’s how scientists know which coronavirus variants are circulating in the US

A nationwide genomic surveillance system analyzes positive COVID-19 tests to build a picture of which variants are spreading in the population.
Amid the latest surge of COVID-19 cases, health care workers yet again are having to make difficult triage decisions in caring for patients. Morsa Images/E+ via Getty Images

During a COVID-19 surge, ‘crisis standards of care’ involve excruciating choices and impossible ethical decisions for hospital staff

A physician-bioethicist reflects on how health professionals are yet again facing painful reminders of the early months of the pandemic.
Some vaccines use mRNA to make copies of the triangular red spike proteins to induce immunity. Juan Gaertner/Science Photo Library via Getty Images

How can scientists update coronavirus vaccines for omicron? A microbiologist answers 5 questions about how Moderna and Pfizer could rapidly adjust mRNA vaccines

The new omicron variant of coronavirus has a number of mutations that may require manufacturers to update vaccines. The unique attributes of mRNA vaccines make updating them fast and easy.
Health care providers are just one trusted source of information for parents on the safety of COVID-19 vaccines for children. Cavan Images/Cavan via Getty Images

COVID-19 vaccines for children: How parents are influenced by misinformation, and how they can counter it

Pediatricians and other health care providers can take some concrete steps toward building trust and counteracting anti-vaccination misinformation.

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