What measure would you take to prevent water-borne diseases?
Water-borne diseases such as cholera, typhoid, hepatitis B, etc. are spread by drinking contaminated water. These water-borne diseases can be prevented by
i. Drinking clean water and avoiding contaminated water.
ii. Periodic cleaning and maintenance of water storage materials and water sources.
iii. Disinfecting community reservoirs.
iv. Eliminating breeding grounds of the vectors of such diseases.
v. Proper disposal of sewage.
Discuss with your teacher what does ‘a suitable gene’ means, in the context of DNA vaccines.
(1) By practising good habits and avoiding undue peer pressure.
(2) By attaining proper education and counseling.
(3) By seeking help from the parents and teachers.
(4) By maintaining good company.
(5) By seeking medical help if required.
In which way has the study of biology helped us to control infectious diseases?
The study of biology provides us with the knowledge of the spread and communication of infectious diseases and the ways to avoid them. Therefore if we know the cause and origin then we can avoid the spread of disease. Moreover the discovery of vaccines and antibiotics which help to fight against the disease and protect us from catching the diseases is another advantage of biology.
What are the various public health measures, which you would suggest as safeguard against infectious diseases?
The measures that should be taken as safeguard against infectious diseases are:
(i) Proper disposal and treatment of sewage and excreta.
(ii) Periodic inspection and cleaning of the public water resources.
(iii) Vaccination to provide protection to the body from communicable.
(iv) Personal hygiene – Maintaining a clean body, consumption of healthy and nutritious food, drinking clean water, etc.
(v) Isolation and proper treatment of the infected persons to prevent the spread of disease.
(vi) Eliminating breeding grounds of the vectors of the infectious diseases.
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