Authorities of the Rajendra Institute of Medical Sciences (RIMS) on Friday said that RJD chief Lalu Prasad Yadav's health condition is stable. Yadav, who has been undergoing treatment at RIMS since December 2017, on Thursday complained of breathing difficulties. "COVID-19 has been ruled out with both antigen and RT-PCR tests being negative," RIMS Director Dr Kameshwar Prasad said.