1. A single injection of long-acting penicillin cures yaws (before) Publication: Produced: [not before 1960] Subject(s): ChildMothersYawsYaws -- drug therapyHealth PersonnelPenicillinsNigeriaWorld Health Organization.
2. A single injection of long-acting penicillin cures yaws (after) Publication: Produced: [not before 1960] Subject(s): ChildMothersYawsYaws -- drug therapyPenicillinsNigeriaWorld Health Organization.
3. VD: sometimes penicillin doesn't work Publication: [United States? : s.n., between 1939 and 1945] Subject(s): Sexually Transmitted Diseases -- prevention & controlPenicillins
