A tiny protozoan plasmodium is responsible forcausing malaria. Four differentbspecies of Plasmodium namely,P.vivax,P.m
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alariae,P.falciparum and P.ovale occurin india causing malaria. Of these, the malignant and fatal malaria, caused by Plasmodium falciparum is the most serious one.
symptoms
1] Malaria is characterized by chillness and rise in temperature. This is followed by perspiration and lowered body temperature. The person feels normal for some time but the fever recurs at regular intervals.
2] Successive attacks of malaria result in the distension of spleen and destruction of liver tissues.
Prevention and control
1] Sanitary measures include ground fogging with disinfectants.
2] Closure of stagnant pools of water and covering ditches is suggested.
Life cycle of malarial parasite- plasmodium
The sexual stage of Plasmodium takes place in female Anopheles mosquito whereas the vegetative stage occurs in man. When a female Anopheles mosquito bites an infected person, these parasites enter the mosquito and undergo further development in the mosquito body. The parasites multiply wihin the body of the mosquito to from sporozoites that are stored in the salvary glands of mosquito. When these mosquitoes bite a person, the sporozoites [the infectiuus stage]are introuced into his body they multiply within the liver cells first and enter the RBC of man, resulting of RBC. This resultsin the release of toxic substance called haemozoin which is responsible for the chill and high fever, recurring three to four days.
symptoms
1] Malaria is characterized by chillness and rise in temperature. This is followed by perspiration and lowered body temperature. The person feels normal for some time but the fever recurs at regular intervals.
2] Successive attacks of malaria result in the distension of spleen and destruction of liver tissues.
Prevention and control
1] Sanitary measures include ground fogging with disinfectants.
2] Closure of stagnant pools of water and covering ditches is suggested.
Life cycle of malarial parasite- plasmodium
The sexual stage of Plasmodium takes place in female Anopheles mosquito whereas the vegetative stage occurs in man. When a female Anopheles mosquito bites an infected person, these parasites enter the mosquito and undergo further development in the mosquito body. The parasites multiply wihin the body of the mosquito to from sporozoites that are stored in the salvary glands of mosquito. When these mosquitoes bite a person, the sporozoites [the infectiuus stage]are introuced into his body they multiply within the liver cells first and enter the RBC of man, resulting of RBC. This resultsin the release of toxic substance called haemozoin which is responsible for the chill and high fever, recurring three to four days.
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