study

Oxford-AstraZeneca vaccine appears to substantially reduce coronavirus transmission, study shows

Adults aged 20 to 49 are the biggest disseminators of COVID-19 in the USA: study

Oxford-AstraZeneca vaccine reduces COVID transmission: Study | Coronavirus pandemic news

AstraZeneca vaccine dramatically reduces transmission of COVID-19, according to study

The study found that children’s diet has a lifelong impact

UK says new study justifies postponing second virus vaccine injection

UK says new study justifies postponing second vaccine injection against virus

Postponing the second dose of AstraZeneca vaccine works, study shows

Younger adults are the largest coronavirus disseminators in the US, study suggests

Sinopharm’s COVID-19 vaccine remained active against South Africa variant, reduced effect – laboratory study

Large UK study confirms that Covid-19 antibodies last at least 6 months

Recovered COVID patients likely protected for at least six months, study shows