The Covid vaccination was hit by another controversy when the British pharmaceutical company AstraZeneca admitted in the UK court on April 29, during a legal filing, that due to the Covid vaccine developed by them, known as Covishield in India, a rare medical condition has emerged as a side effect of this vaccine, which has been described as thrombosis with thrombocytopenia syndrome (TTS). TTS is a rare condition in which blood clots start forming in the body and the number of platelets in the blood decreases. This vaccine developed by AstraZeneca was made in India by Serum Institute of India.