*This strain could be the dominant one in American universities.
Receiving two doses of the Pfizer-BioNTech vaccines provides 96 percent protection against hospitalizations due to the Delta variant of COVID-19, while the Oxford-AstraZeneca vaccine is 92 percent effective, according to a study British research.
The B.1.617.2 (Delta) variant, first detected in India, has increased transmissibility compared to other SARS-CoV-2 virus variants.
The analysis included 14,019 cases due to the Delta strain, of which 166 were hospitalized, between April 12 and June 4 in England.
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