Unlike other SARS-CoV-2 variants, the Delta variant can attach to copies of itself, forming larger aggregations, or clumps, of viral particles, suggests a study by scientists at the National ...

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron variant is associated with less severe acute disease and reduced risk of hospitalization as compared to the previously dominant ...

"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 ...

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 ...

In a recent study posted to the medRxiv* preprint server, researchers determined the hospital stay lengths for coronavirus disease 2019 (COVID-19) patients infected by the Omicron and Delta variants ...

People infected with the Omicron variant of the coronavirus SARS-CoV-2 are almost 50% more likely to infect those they live with than are individuals infected with the Delta variant, a detailed ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (NEXSTAR) – When the omicron variant emerged ...

Part of the problem is low vaccination rates, experts said. The Centers for Disease Control and Prevention assigned two federal "surge team" members to Missouri this week to help fight the state's ...

Researchers determined that the BA.2 subvariant is less severe than the previous Delta variant and less severe to an even greater extent than the original Omicron variant. In a recent study that ...

A new study provides answers to why Delta is the most lethal variant of SARS-CoV-2. To answer this critical question, researchers performed robust biophysical analyses on the Delta variant and ...

Omicron and its subvariants make up 99.9% of current COVID-19 spread. What happened to the variants that once wreaked havoc? “For all intents and purposes, we can consider them gone,” said David Dowdy ...