- It is estimated that about 300-500 million clinical cases
of malaria occur each year.
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- Approximately 2.5 million die from malaria each year
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- Malaria is usually a 'rainy season disease'; coinciding
with increased mosquito abundance.
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- Deforestation, population migration and changes in agricultural
practice have profound effect on malaria transmission. Urban
malaria is becoming an increasing problem in many countries.
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- In many areas the transmission of malaria varies considerably
over short distances, and severe disease is common when
non-immune individuals enter these areas.
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- Epidemics are caused by migration (i.e. Introduction of
susceptible hosts), the introduction of new vectors, or
changes in the habits of the mosquito vector in the human
host. Epidemics have occurred in North India, Sri Lanka,
South East Asia, Madagascar and Brazil.
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- Malaria is endemic in some 90 countries
in Africa, Asia, Oceania and South America, and in the islands
of Hispaniola in the Caribbea.
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