Stroke risk also declined after the third dose (HR: 0.69; 95% CI: 0.63–0.74), with no significant differences between sexes or vaccine types, although AZD1222 showed slightly lower hazard ratios.
The adults were vaccinated with two doses of AZD1222/Covishield ( n = 77) [manufactured by Serum Institute of India Pvt Ltd] vaccine and BV152/Covaxin ( n = 99) [manufactured by Bharat Biotech] ...