Define:

(a) Infection

(b) Pathogen

(c) Incubation

(d) Disease

(e) Vaccine

Write the scientific names of the causative organisms for the following, diseases :

(a) Cholera

(b) Typhoid

(c) Tuberculosis

(d) Taeniasis

(e) Filariasis

Write very briefly about the following:

BCG

Write very briefly about the following:

Incubation period