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 ...

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 ...

"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 ...

PHILADELPHIA (WPVI) -- The United States is facing a COVID-19 surge this summer as the more contagious delta variant spreads. More than 614,000 Americans have died from COVID-19 and more than 4.2 ...

KINGS COUNTY, Calif. (KFSN) -- Kings County health officials have confirmed the first three Delta variant cases in the county. The Delta variant is set to become the predominant COVID-19 strain in the ...

Estimates show the variant accounts for over 51% of all new cases nationwide. A highly contagious variant of the novel coronavirus that was initially identified in India is now the dominant strain in ...

PHILADELPHIA (WPVI) -- When comparing omicron vs. delta variants, omicron has 53% less risk of hospitalization and 91% less risk of death, CDC Director Dr. Rochelle Walensky revealed on Wednesday.