Effectiveness of the first component of Gam-COVID-Vac (Sputnik V) on reduction of #SARS-CoV-2 confirmed infections, hospitalisations and mortality in patients aged 60-79: a retrospective cohort study in Argentina - EClinicalMedicine
▻https://www.thelancet.com/journals/eclinm/article/PIIS2589-5370(21)00406-5/abstract
The study results indicate that in real life the first component of the Sputnik V vaccine confers high protection against laboratory-confirmed SARS-CoV-2 infections, COVID-19 hospitalisations and deaths in a population of 60-79 years of age.
This effect was consistent in all subgroups tested.
Our results could provide support for delaying the second dose in countries facing vaccine shortages to allow for higher population coverage with a single dose.
Assessing the effectiveness of a single dose for a longer follow-up period than the 83 days tested in this study could be crucial to identifying the most appropriate length of time the second dose can be delayed.