A Matter of WHO
- Bliain: 1961
- Tír: United Kingdom
- Seánra: Mystery, Crime, Drama
- Stiúideo: Foray
- Eochairfhocal: outbreak, epidemic, smallpox
- Stiúrthóir: Don Chaffey
- Caitheadh: Terry-Thomas, Sonja Ziemann, Alex Nicol, Richard Briers, Honor Blackman, Guy Deghy