Shimla: The central government has approved to conduct corona test in three medical colleges and two regional hospitals in Himachal. According to the sources, five True Nut machines have arrived from the Center for the investigation of Covid-19. They are being sedditional Chief Secretary Hn process of Covid-19. Right now five places in Himachal are being investigated for corona samples. He said that according to the advisory issued by the Government of India, now samples will be taken for re-examinealth RD Dhiman said that this will further speed up the investigatioation after 10 days of those found to be Covid-19 positive. If they are symptomatic for the last three days and the report is found to be negative, they will be discharged. If found positive, samples will be taken for re-examination after five more days.