#COVISHIELD has been taken in a transparent manner based on scientific data.India has a robust mechanism to evaluate data.It's unfortunate that such an important issue is being politicised!https://t.co/YFYMLHi21LDr Vardhan also attached a statement from the Centre that quoted Dr NK Arora, the chief of the National Technical Advisory Group on Immunisation (NTAGI), on the subject.The Health Minister's statement comes amid concerns that the government had doubled the gap between the two doses of Covishield - from six-eight weeks to 12-16 - without the agreement of the NTAGI.NTAGI scientists told news agency Reuters that the body did not have enough data to make such a recommendation.However, Arora, has said the decision to increase the gap.