Serum Institute disclosed Covishield side effects since 2021
The Serum Institute of India disclosed rare side effects of Covishield since 2021, following AstraZeneca's global vaccine withdrawal due to updated options. SII, using AstraZeneca's formula, ceased Covishield production in December 2021 due to decreased demand amid new variants. The vaccine's packaging insert includes information on thrombosis with thrombocytopenia syndrome (TTS), a rare but serious side effect involving blood clots with low platelet counts.