Smallpox has been eliminated, yet malaria and cholera have not. Which statements give the correct reasons for this?
- A1, 2 and 3
- B1, 2 and 4
- C1, 3 and 4
- D2, 3 and 4
Biology 9700 · AS & A Level · Infectious diseases
Smallpox has been eliminated, yet malaria and cholera have not. Which statements give the correct reasons for this?