Word: protozoa
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...protozoa which cause the disease are carried by about 60 kinds of mosquitoes and are of four main varieties, each producing its own form of malaria: 1) Plasmodium vivax produces the mildest disease, benign tertian malaria; 2) P. malariae bring on quartan malaria, the most difficult to eradicate; 3) P. falciparum produces dangerous malignant tertian malaria; 4) P. ovale produces symptoms similar to those of benign tertian malaria...
Mosquitoes carry the protozoa on their stomach linings and in their salivary glands. While in the mosquito the protozoa are in the sexual phase of their cycle; man's blood stream is the home of the asexual phases. In an active case of malaria a patient's blood teems with asexual forms which multiply in the red blood cells, burst out bringing poisons with them. A few sexual forms of protozoa are produced in the human body, but they cannot multiply sexually unless a mosquito carries them off, thus completing the cycle...
...fashioned mosquito nets, oil on mosquito-breeding water, citronella to keep from getting the dangerous mosquito bites. In some parts of India the U.S. Army does not employ native labor lest the mosquitoes pick up plasmodia from their blood. Antimalarial chemicals can kill sexual forms of the protozoa in a patient's blood, prevent a mosquito from carrying his infection to others. No known chemical kills plasmodia in the form mosquitoes deliver to man. Chemicals can get them after they change their shapes and start dividing, prevent development of symptoms. If symptoms develop, chemicals can usually help a patient...
...kinds of plasmodia in the human blood stream-the forms which produce the shivering, sweating and fever. Quinine also destroys the sexual forms of all but P. falciparum, which means that even after he is "cured" by quinine a patient with malignant tertian malaria can give the protozoa to any suitable mosquito...
...Plasmochin, another synthetic, does not kill asexual forms of the protozoa unless given in toxic doses, is therefore not used for eradicating symptoms. But in very small amounts it kills all sexual forms, is therefore used to supplement quinine or atabrine to prevent convalescents from passing protozoa on to mosquitoes. Plasmochin is safe to give simultaneously with quinine, but some doctors believe it produces toxic effects if given along with atabrine, advise waiting a few days after atabrine before giving...