이와 달리 아스트라제네카 백신의 1차 접종과 2차 접종 간격을 6주 미만으로 설정하면 효과가 54.9%로 낮아졌다.
In contrast, when the interval between the first and second inoculations of the AstraZeneca vaccine was set to less than 6 weeks, the effectiveness was lowered to 54.9%.