There are many diseases that cannot be cured. No medicines are there yet to treat them like AIDS or cancer. So it is better not to get the disease rather than to cure it. If we can prevent the disease to occur then no medicines are required. More over the medicines have several side effects that may destroy some other system while curing a disease. Thus it is better to prevent the disease to occur than to cure it by applying medicines. Hence prevention is better than cure.
OR
i) Keep yourself as clean as possible.
(ii) Maintain cleanliness in home as well as in the neighbourhood.
(iii) Eat balanced food to prevent nutrient deficiency.
(iv) Take a bath daily.
(v) Always wash your hands before and after every meal,
(vi) Maintain proper provisions for safe disposal of human excreta and domestic waste.
(vii) Awareness on sexually-transmitted disease should be given to every person as possible
to avoid these diseases.
(viii) Well-isolated sewer system should be provided.