Biology · Human Diseases
Smallpox was successfully eradicated globally due to several epidemiological factors except:
- 1The absence of an animal or extra-human reservoir.
- 2The presence of a long and highly variable incubation period.✓
- 3The availability of a highly effective and potent vaccine.
- 4The infection being easily recognizable with no subclinical cases.
Correct answer
The presence of a long and highly variable incubation period.
Download Single Question PDF
Save this question and verified answer as a clean study sheet with live clickable link.
Share with Friends & Study Groups
Challenge your peer aspirants on WhatsApp or Telegram to solve this question!
Preparing for Biology?
Practice full-length mock tests with real exam timers, instant score analysis, and all-India ranking.
Want more practice questions on Human Diseases?
Solve complete topic-wise tests with detailed solutions on GkGet.
Related Practice Questions
Recommended practice questions in Biology · Human Diseases