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 coronavirus pandemic continues, infections caused by the Lambda variant have been emerging in the United States, including in Texas, where Houston Methodist Hospital last month reported its ...

A Houston hospital reported a lambda COVID-19 variant case this week as COVID-19 cases in general have started to rise again across the country. With the rapid spread of the delta variant across the ...

First, many called it simply the coronavirus, then COVID or COVID-19. Now, we are keeping track of descriptors like alpha, beta and gamma, the variants of COVID-19. The World Health Organization ...

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 ...

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 ...

Vaccine effectiveness against COVID-19 infection dropped from 91% to 66% once the delta variant accounted for the majority of circulating virus, according to a study published Tuesday by the U.S.

A new investigation published in JAMA examines how COVID-19 vaccination affects maternal and perinatal outcomes among pregnant individuals infected with SARS-CoV-2, drawing on population-level data ...

Add Yahoo as a preferred source to see more of our stories on Google. Getty Images An alleged warning has spread online for years about a supposed "new COVID-Omicron XBB variant" — a new strain of the ...