Special Assistant to Prime Minister on Health Dr Faisal Sultan Saturday said that Covid-19 virus affected the health system of the entire world and no one can fight against coronavirus alone at this time. Dr. Faisal Sultan said that the vaccination for corona was compulsory to stay clear from virus, adding that it can be eliminated by early administering of corona doses, a private news channel reported. He said all personnel equipment would help frontline workers and paramedical staff to fight against the virus ambitiously. Faisal said that Pakistan and the United States were enjoying good relations for the past many decades.