A student had an attack of measles and recovered from the infection. His science teacher said that he will not get that disease again in his life time. Is it true? Why?

List out the diseases based on their mode of transmission (water borne, air borne, and sexual contact)

i) cholera ii) typhoid

iii) tuberculosis iv) leprosy v) syphilis

vi) gonorrhoea vii) pneumonia

viii) common cold ix) amoebic dysentery x) AIDS

i) Give any three examples for the most infectious diseases in man and their causative agents.

ii) To discover medicine for viral infected diseases like AIDS is more difficult than other diseases. Is the statement true or false? Discuss.

Name the causative organisms responsible for ring worm in humans? Mention the symptoms of the infection.

Pick out the odd ones:

i) AIDS: Retro virus, lymphocytes, BCG, ELISA

ii) Bacterial disease: Rabies, cholera, common cold, influenza

iii) DPT vaccine: Diphtheria, tuberculosis, pertusis, tetanus

iv) Infective stage of Plasmodium in humans: Sporozoites, merozoites, trophozoites, gametocytes.

v) Mental dimension: brightness of skin, normal metabolism, no black rings around eyes, knows his capacity.