(a)Diabetes :- This disease is caused when the body becomes

unable to make use of the sugar present in the food. This

excessive sugar accumulates in the blood and is then passed

through the urine. It early symptoms are not visible to the

patient. The disease is known by the patient only when there

is excessive thirst and when too much urine is passed.

For its cure, there should be regular injections

of insulin ; and for prevention, the diet should be regulated.

Plague :- This disease is caused by the bite of infected rat

flea. It can be cured by Streptomycin and Sulpha drugs. Its

preventive measures are

(1) Complete isolation of the patient.

(2) Burning of dead rats and killing of living rats.

(3) Anti-plague inoculation, Disinfection of the clothes and

utensils of the patient.

Typhoid :- It is an infectious fever and is caused by the

germ known as Typhoid bacillus. It is also caused by

drinking infected water and milk, by eating infected

ice-cream and fish. Its symptoms ate headache, fever etc..

It cure us T.A.B. innoculation

It preventive measures are

(1) Avoid exposure of things to flies.

(2) Disinfection of all clothes and utensils of the patient

(3) Avoid taking under-ripe and over-ripe things

(4) Boiling of water before drinking and washing of

vegetables etc.. with potassium parmaganate.

(5) Complete rest.

Hydrophobia :-It us caused by the bite of a rabid animal

generally a dog. Jackal, fox or cat

Its cure is prophylactic vaccination. It can be

prevented by avoiding bite of a rabid animal and if bitten,

the bitten part should be cleaned well with potassium

parmenganate or hot water.