HE study of disease is really the study of man and his environment. The key to man’s health lies largely in his environment. In fact much of man’s ill health can be traced to adverse environmental factors such as water, soil and air pollution, poor housing conditions, adulterated, unhygienic and imbalanced food, presence of animal reservoirs, and insect vectors of diseases. Most of these factors are man made from micro to macro level. It is the undesired daily human activities which create environmental hazards to human health. The attainment of healthy environment is made more and more complex by man himself.The dictionary meaning of sanitation is “the science of safeguarding health”. In the past sanitation was centered on the sanitary disposal of excreta. Sanitation to many people still means only the construction of latrines. In fact, the term sanitation covers the whole field of controlling the environment with a view to preventing disease and promoting health. A number of factors in environment like food, water, housing, clothing, disposal of excreta, waste disposal are controllable. These controllable factors are those included in the “standard of living”. It is control of these factors which has been responsible for the improvement of the standard of living and disease prevention to a large extent in developed countries.
The purpose of environmental health is to create and maintain ecological conditions that will promote health and thus prevent disease. One of the most essential tasks is safe water and the safe disposal of excreta. More than one billion people in the world lack access to safe drinking water and more than two billion lack adequate system for disposal of excreta. The most important diseases because of these factors — diarrhoea, the major killer, and intestinal worm infestations, the major cause for anaemia — account for 10 per cent of the total disease burden of developing countries. From various statistics it is an undisputed fact that we need to control our environment on a war footing.
Instead of telling the do’s and don’ts, let me just inform my countryman about the consequences of insanitation. We know that majority of killer diseases like diarrhoea, dysentery, typhoid, hepatitis, malaria, dengue, tuberculosis, measles, swine flu, diphtheria, polio, tetanus etc are infectious diseases and all of them are preventable by our own efforts even at individual levels.
The prevention of all of them starts as soon as the baby is conceived. Taking two doses of tetanus vaccine during pregnancy and a safe institutional delivery will prevent neonatal tetanus which certainly is a very cheap prevention of this killer disease which arises due to unhygienically handled umbilical cord at birth. Later in childhood and also in adult life regular immunization will prevent it throughout life.
Starting mother’s milk soon after birth and exclusive breast feeding for at least six months of life will prevent diarrhoea and dysentery. Our unsanitary habits like introducing bottle feeding is killing so many due to diarrhoea! Even those who survive are surviving at a high cost to individuals and community. Doctors often prescribe antibiotics and many other medicines which are in fact detrimental. Injudicious use of antibiotics is a major concern in drug resistance besides the economic factors and health hazards.
Another form of insanitation results from giving apple, anar and palak juice to the baby with the hope of preventing anaemia. One can imagine the unhygienic method of making these unnecessary juices which no baby needs. Anemia prevention can be best done by hygienically cooked home food. The anaemia producing hookworms live in the soil which is littered with human and animal excreta. Therefore, not walking barefoot, not washing hands with “mitti” , thorough hand washing frequently, eating salads after proper washing etc are anaemia prevention tricks. Often water is inadequate in schools , offices and other public places. We must exercise our intelligence to somehow have access to clean and ample water which is a key to prevention of many diseases.
The disease producing microbes are all over in our atmosphere due to our dirty habits. The indiscriminate disposal of human and animal excreta, the waste from homes , the leftover organic and inorganic matter in front of shops, homes, sabzi mandis, the fecal contamination of leaking pipes ,the un- flushed excreta of blocked toilets, the ditches with stagnant water etc are storehouses for flies, mosquitoes and germs and parasites which the naked eyes cannot see but they are in the air everywhere clinging to us looking for opportunity to invade us for their survival. The result is all the above diseases. Diarrhoeas, hepatitis , typhoid , dysentery are waterborne, malaria and dengue are also indirectly waterborne as the mosquitoes survive in stagnant water.
Typhoid is due to dirty fingers , dirty fluids and flies which survive on feces. Look at the cost of treatment of typhoid. Germs are getting resistant. The treatment may not be available one day. The vaccine is available but how many parents use it regularly?
Even food handlers like people working in hotels and restaurants are not being vaccinated as a rule so that they do not pass on the hidden germs of their carrier state. Typhoid has a carrier stage. It means people may not suffer but they can pass on infection through food. Indiscriminate spitting and similar dirty habits spread the germs of tuberculosis. BCG vaccine at birth prevents tuberculosis to some extent.
Hepatitis of many varieties is waterborne and comes in epidemics killing so many. Only for some forms of hepatitis we have the preventive vaccines which also has to start right from birth.
Easy solutions One of the most essential tasks is safe water and the safe disposal of excreta.
The most important diseases because of these factors —
diarrhoea, the major killer, and intestinal worm infestations, the major cause for anaemia — account for 10 per cent of the total disease burden of developing countries.
Starting mother’s milk soon after birth and exclusive breast feeding for at least six months of life will prevent diarrhoea and dysentery.
Injudicious use of antibiotics is a major concern in drug resistance.
Not walking barefoot, not washing hands with “mitti”, thorough hand washing frequently, eating salads after proper washing etc are anaemia prevention tricks.
Access to clean and ample water is a key to the prevention of many diseases.
Indiscriminate spitting and similar dirty habits spread the germs of tuberculosis.
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The writer is a noted paediatrician and allergy specialist