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AstraZeneca/Oxford vaccine more effective with longer dose gap: study
- The study confirmed the Anglo-Swedish drugmaker's findings from earlier this month that showed the vaccine had 76% efficacy against symptomatic coronavirus infection for three months after the first dose.
- Efficacy was found to be at 81% with the longer interval of 12 weeks between the first and second dose, compared with 55% efficacy up to the six-week gap.