Just one dose of the BioNTech/Pfizer, Moderna or Oxford/AstraZeneca vaccines offers higher protection against symptomatic illness caused by the Delta variant than previous studies have shown, a Canadian study has reported., which isn't yet peer reviewed, was announced by AstraZeneca Friday but first published on July 16. It compared the efficacy of the BioNTech/Pfizer, Moderna and Oxford/AstraZeneca vaccines against several variants of concern.
In particular, protection against the Delta variant, first identified in India, was 56 percent effective against symptomatic infection after one dose of the BioNTech/Pfizer vaccine. Moderna was 72 percent effective, and Oxford/AstraZeneca 67 percent. New England Journal of Medicine , using data from Public Health England, that found the effectiveness of the BioNTech/Pfizer vaccine was just 36 percent after a single dose, while one jab of the Oxford/AstraZeneca vaccine 30 percent effective.
As for more severe illness resulting in hospitalization or death, the Canadian study indicated that one dose of the BioNTech/Pfizer, Moderna and Oxford/AstraZeneca vaccines was 78 percent, 96 percent and 88 percent effective, respectively, against the Delta variant. However, one dose of the Oxford/AstraZeneca vaccine showed much lower efficacy against symptomatic illness caused by the Beta and Gamma variants, first detected in South Africa and Brazil, respectively, with efficacy standing at 48 percent. BioNTech/Pfizer had 60 percent efficacy and Moderna 77 percent against the Beta and Gamma variants.
However, one dose of the Oxford/AstraZeneca vaccine showed much lower efficacy against symptomatic illness caused by the Beta and Gamma variants, first detected in South Africa and Brazil, respectively, with efficacy standing at 48 percent.
Current Pfizer vaccine has served it's purpose; time to move forward with the more effective oral vaccine (prevents against any variant infections) produced in Israel and the vaccine produced by Baylor College of Medicine w/Texas Children's.
...and ZERO (0%) percent effective if you get NO VACCINE! GetVaccinatedNow
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