Which Disease CANNOT Be Prevented Via the Use of a Vaccine

Question

Which disease CANNOT be prevented via the use of a vaccine generated from an attenuated pathogen?
A) malaria
B) measles
C) mumps
D) rubella

Accepted Answer

Malaria is caused by a protozoan parasite, not a virus or bacterium, which means that a vaccine generated from an attenuated pathogen may not be effective in preventing the disease.