Variola is a type of which pox virus?: (A) Parapoxvirus, (B) Orthopoxvirus, (C) Yatapox virus, (D) Molluscipox virus
Answer is B. ANSWER: (B) Orthopox virusREF: Jawetz 24th ed chapter 34 table 34-2 POXVIRUSES CAUSING DISEASE IN HUMANSGenusVirusPrimary hostDiseaseOrthopoxvirusVariolaHumansSmallpox (now eliminated) VacciniaHumansLocalized lesion; used for smallpox vaccination BuffalopoxWater buffaloHuman infections rare; localized lesion MonkeypoxRodents, monkeyHuman infections rare; generalized disease CowpoxCowHuman infections rare; localized ulcerating lesionParapoxvirusOrfSheepHuman infections rare; localized lesionPseudocowpoxCowsBovine papular stomatitisCowsM olluscipoxvirusMolluscumcontagiosumHumansMany benign skin nodulesYatapoxvirusTanapoxMonkeysHuman infections rare; localized lesion YabapoxMonkeysHuman infections very rare and accidental; localized skin tumors