Mary Kekatos, ABC News

As US reels from multiple mass shootings, can loneliness be a trigger for violence?

Emily Fennick / EyeEm/Getty Images(NEW YORK) -- There is a loneliness epidemic in the United States...

The psychology behind what comes over people to disarm shooters

Steve Prezant/Getty Images(NEW YORK) -- Potentially more lives were saved Sunday when a man disarmed the...

FDA proposes most Americans receive one annual COVID vaccine, similar to flu

Nik Oiko/SOPA Images/LightRocket via Getty Images(WASHINGTON) — The U.S. Food and Drug Administration is considering a...

Several celebrities test positive for COVID after Golden Globes

Jackyenjoyphotography/Getty Images(NEW YORK) -- In the wake of the Golden Globes last week, several celebrities said...

Why flu and strep A can be so serious in children

Ekaterina Goncharova/Getty Images(NEW YORK) -- Amid a flu season that started earlier than expected there's also...

What’s in the agreement that led to the end of the New York City nurses’ strike

Witthaya Prasongsin/Getty Images(NEW YORK) -- The New York City nurses' strike finally ended after the hospitals...

China is ‘heavily underreporting’ number of COVID-19 deaths, WHO says

Massimiliano Finzi/Getty Images(GENEVA) -- The World Health Organization said Wednesday China is "heavily underreporting" the number...

COVID was the leading cause of law enforcement deaths in 2022 for third year in a row: Report

amphotora/Getty Images(NEW YORK) -- COVID-19 remained the leading cause of law enforcement deaths in 2022 despite...

Why thousands of New York City nurses are striking and what’s at stake

Selcuk Acar/Anadolu Agency via Getty Images(NEW YORK) -- The nurses strike in New York City has...

More US schools institute mask mandates as COVID cases rise

www.fuchieh.com/Getty Images(NEW YORK) -- More schools across the United States are putting mask mandates in place...