Varanasi: There has been sudden change of guard at the Banaras Hindu University Trauma Centre and Sir Sunderlal Hospital in the midst of Covid second wave sparking speculations of all not being well. The professor in charge of Trauma Centre was changed on Friday, a day after a new medical superintendent of SS Hospital was appointed. BHU spokesperson Rajesh Singh, however, claimed that the changes were made after the two heads submitted their resignations. “The vice-chancellor appointed Prof Saurabh Singh of the department of orthopedics as prof in charge of Trauma Centre on Friday after Prof SK Gupta of the department of general surgery resigned. Just a day earlier, Prof KK Gupta of the department of medicine was appointed medical superintendent of Sir Sunderlal Hospital after the resignation of Prof SK Mathur.