The delta variant is fueling the COVID-19 surge in the United States, but experts warn that a more dangerous variant could emerge if more Americans don't get vaccinated. Delta is the most recent of ...

As the highly contagious Delta variant of COVID-19 continues to surge in populations with low vaccination rates, doctors are looking more closely at the origins of another variant. The Epsilon variant ...

FRESNO, Calif. (KFSN) -- The highly contagious Delta variant, according to the World Health Organization, has been found in nearly 100 countries around the world. It is one of four variants of concern ...

The Centers for Disease Control and Prevention listed the COVID-19 delta variant as one of its "variants of concern" (VOCs) on June 15. According to the CDC, VOCs can be more contagious, more ...

HOUSTON, Texas (KTRK) -- An epidemiologist with UTHealth School of Public Health warned COVID-19 cases could spike again once school resumes this fall. Katelyn Jetelina said she's concerned about the ...

"It's the biggest experiment that's ever happened." In a stunningly short period of time, the delta variant has changed the course of the COVID-19 pandemic by evolving to become more transmissible ...