Certainly, it is not a mere coincidence that whenever we think of the silent explosion of population, the metaphors that spring to the mind are all connected with suffocation, choking off other forms of life, malignant growth and finally death.
Do people shape events, or do events shape people? Are we ruled by and controlled by the stars and planets, the shapes of our bodies, the Lines on our palm, or are we the architects of our destiny? Is history the result of personal Endeavour?
Communicable diseases can be controlled and prevented by adequate measures which involve: 1. Diagnosis 2. Notification 3. Isolation 4. Treatment 5. Quarantine 6. Investigation 7. Disinfection 8. Blocking of transmission 9. Immunization 10. Health education.
It was launched by Government of India in April 1953. Its aim was to reduce the incidence of malaria by residual spraying with DDT. The programme operated successfully for 5 years.
Animals live very close to men. In some cases humans and animals live under the same roof. Animals are bred for their milk, flesh etc., Also cattle are used for agricultural purposes. In addition, pet animals also are grown in houses.
Rodents include rats, bandicoots and mice which live in homes, agricultural fields and forests. Rodents are hazards to health. Also they cause damage to buildings, food stuffs and other materials. Rodents transmit diseases through:
Insecticides are substances which kill insects. Pesticides are used for the control of pests. Pesticide is a general term which includes insecticides, fungicides, herbicides and insect repellents.
Cyclops is also known as water flea. It is a crustacean present in fresh water. It is very small measuring about 1mm in length. It has 1. a pear shaped semi-transparent body 2. a forked tail 3. two pairs of antennae 4. five pairs of legs 5. a small pigmented eye. The average life of cyclops is about 3 months.
Itch mite Sarcoptes scabies is the causative agent of scabies. Scabies affects the hands, feet, axilla, buttocks, lower abdomen,feet and ankles.
Mites (chiggers) resemble ticks in appearance. They have a body well demarcated into head, thorax and abdomen. They have 4 pairs of legs. The two important mites are: 1. trombiculid mite 2. itch mite.