The Bihar government transferred health secretary Sanjay Kumar on Wednesday. Kumar was at the forefront in the fight against Covid-19 in the state. The 1990-batch IAS officer will swap posts with 1993-batch officer Uday Singh Kumawat, who is the state's principal secretary for Tourism Department.No reason has been mentioned for the abrupt top-level reshuffle, which comes as a surprise since Sanjay Kumar is said to be in the good books of chief minister Nitish Kumar. After the migrants influx, the corona cases have gone up in the state.