PATNA: Two residents of Munger district in Bihar tested positive for Covid-19 on Thursday, taking the total number of confirmed cases in the state to six, an official said.According to Pradip Das , the director of Rajendra Medical Research Institute , samples were collected of 55 people who had come in contact with a 38-year-old who got infected with the virus and died last Saturday, a day before his test results came.Of them, two tested positive, he added.