Does shortening the time between two doses of AstraZeneca vaccine reduce the protection against the virus??

The interval between two doses of Astrazynx should be three months. Then the vaccine can provide protection with a protection rate of up to 80%.

If the period between the two doses is reduced to less than six weeks, the protection rate drops to 55%, and the shorter the time between the two doses, the lower the protection provided by the vaccine. While a single dose provides protection by more than 70% for a period of three months.
Dr. Orwa Mohamed Hani El-Mally

German International Academy of Medicine and Research