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Dr KK Aggarwal 01 July 2019

Malaria is transmitted by the bite of a female Anopheles mosquito.
Malaria fever presents with chills, especially during afternoon.
The malaria mosquito bites mainly between dusk and dawn while the dengue mosquito bites during the day.
Malaria can also be transmitted by blood transfusion by sharing of contaminated needles.
Bed nets are good against malaria as major malarial vectors bite during the night.
The behavior of mosquitoes may differ. Some may prefer to rest indoors and feed indoors in the night. Some may prefer to rest and feed outdoors earlier in the day.
Preventive therapy of malaria can be instituted in pregnancy in high risk areas.
The malarial mosquito feeds every third day compared to dengue mosquito which feeds three times a day.
Spraying of the indoor residential walls and ceiling is effective against mosquitoes.
DDT is widely used as indoor residential spraying.
DDT should not be applied more than once or twice yearly on the walls.
Mosquito contact with DDT surface would generally save from lethal exposure outside the house.
Public must know that spray may require furniture rearrangement. Walls may become streaked with chemical treatment and residual odor from DDT.
The other alternative is malathion spray.

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