Mosquito Borne Diseases for Use in the Public Schools of the Canal Zone
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How long may the mosquito that has obtained the germ from a yellow fever patient continue dan- gerous ? 19. What interesting observations are explained by answers to the last three questions ? 20. From what you now know, can you suggest other means, than the destruction of breeding places of mos- quitoes, for combating yellow fever ? 21. How may these measures be carried out? 22. Is yellow fever preventable by the means we have considered ? MALARIA. 1 . What is malaria ? 2. Is there only one ki...nd of malaria? 3. State in what manner the symptoms differ. 4. Describe briefly the parasites causing malaria. 5. How do malaria parasites obtain entrance to the blood? 6. Where does the mosquito obtain the parasites? 7. Can it then immediately transmit them or does an interval have to elapse, as in the case of yellow fever ? 8. Have we any means of destroying the parasites in the blood? 9. Is there only one kind of mosquito that carries malaria ? i o. How may A nopheles mosquitoes be distinguished ?
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