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 ...

SAN FRANCISCO (KGO) -- The R1 variant is the new strain of COVID-19 researchers are keeping a close eye on. The CDC identified "multiple spike protein mutations" in this variant. "The R.1 variant does ...

The mu variant is the fifth variant strain to earn the title of "variant of interest" from the WHO. Among the other variants tracked by the WHO is the delta variant — a mutant strain proven to be more ...

HOUSTON, Texas (KTRK) -- The World Health Organization has listed "mu", the newest COVID-19 variant, as a 'variant of interest'. Health officials say they are keeping a close eye on it, so we asked Dr ...

The mu variant is the latest to spark headlines in the coronavirus pandemic, but for now the delta strain remains the biggest concern.

U.S. Army Capt. Annemarie Norse'roy, a critical care nurse assigned to the 115th Field Hospital, 286th Medical Detachment, out of Fort Sam Houston, Texas, is deployed in support of the continued ...

While the delta COVID-19 variant is the dominant strain in the U.S., it’s now officially the dominant strain worldwide “by far,” officials from the World Health Organization said during a Sept. 21 ...

OBJECTIVESTo evaluate the effectiveness of the mRNA-1273 vaccine against SARS-CoV-2 variants and assess its effectiveness against the delta variant by time since vaccination. DESIGNTest negative ...