Diseases, Conditions, Syndromes

Messenger RNA Covid vaccines 66% effective against Delta: US study

The effectiveness against infection of the Pfizer and Moderna COVID-19 vaccines dropped from 91 percent before the Delta variant became dominant to 66 percent afterwards, according to a large study of US health workers published ...

Diseases, Conditions, Syndromes

Coronavirus delta variant spreading rapidly in the United States

(HealthDay)—The delta variant of the coronavirus that once crippled India now accounts for 20 percent of infections in the United States, Anthony Fauci, M.D., director of the U.S. National Institute of Allergy and Infectious ...

Diseases, Conditions, Syndromes

Study suggests Delta does not cause more severe childhood COVID

US pediatric COVID hospitalizations have surged since Delta became predominant, but a new study that offers a first look at the relevant data suggests that fears the variant causes more severe disease are unfounded.

Diseases, Conditions, Syndromes

Is the Delta variant hitting kids harder?

The Delta variant is proving just as infectious for children as for everyone else, with pediatric cases surging in some parts of the United States, pediatricians and children's hospitals say.

Diseases, Conditions, Syndromes

Omicron lasts three days less than Delta for boosted: study

People who are vaccinated and have had a booster shot against COVID-19 recover from symptoms from the Omicron variant more than three days earlier than those with the Delta variant, a study said Friday.

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