If the prevalence is very low as compared to the incidence for a disease, it implies:

Prevalence = Incidence X Mean duration of the disease (P = I X d) Incidence reflects causal factors Duration reflects the prognostic factors In the given question, prevalence is very low as compared to the incidence for a disease. Thus, d has to be low; duration of the disease can be sho under 2 circumstances: Either disease is very fatal, or Disease is easily curable