Garba Shehu By Johnbosco Agbakwuru ABUJA-PRESIDENT Muhammadu Buhari has welcomed the arrival of first effective coronavirus vaccine after a successful human trial phase. This was disclosed by the Senior Special Assistant to the President on Media and Publicity, Mallam Garba Shehu in a statement he issued in Abuja last night. READ ALSO:EndSARS: Osun Judicial Panel …