One more step.
de Macedo
C G
CG
D000569:Americas; D006801:Humans; D010175:Pan American Health Organization; D010686:Philosophy, Medical; D011051:Poliomyelitis / Q000453:epidemiology / Q000517:prevention & control*; D017955:Poliovirus / Q000276:immunology; D011054:Poliovirus Vaccine, Inactivated / Q000627:therapeutic use*
D011054:Poliovirus Vaccine, Inactivated