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Malaria

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Definition Malaria is caused by Plasmodium parasites. The parasites are spread to people through the bites of infected female Anopheles mosquitoes, called “malaria vectors.” Malaria produces recurrent attacks of chills and fever. In severe cases it can cause yellow skin, seizures, coma, or death. Symptoms usually begin ten to fifteen days after being bitten. If not properly treated, people may have recurrences of the disease months later. In those who have recently survived an infection, reinfection usually causes milder symptoms. This partial resistance disappears over months to years if the person has no continuing exposure to malaria Malaria kills an estimated 660,000 people each year. Malaria transmission occurs primarily between dusk and dawn because of the nocturnal feeding habits of Anopheles mosquitoes. One should therefore take protective measures to reduce contact with mosquitoes, especially during these hours. These measures include remaining in well-screened areas, usin...

The Mosquitoes Are Coming for Us

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They are our apex predator, the deadliest hunters of human beings on the planet. It has been one of the most aggravating sounds on earth for more than 100 million years — the humming buzz of a mosquito. She gently lands on your ankle and inserts two serrated mandible cutting blades and saws into your skin, while two other retractors open a passage for the proboscis. With this straw she sucks your blood, while a sixth needle pumps in saliva that contains an anticoagulant that prevents that blood from clotting. This shortens her feeding time, lessening the likelihood that you splat her across your ankle. The female mosquito needs your blood to grow her eggs. Please don’t feel singled out. She bites everyone. There is no truth to the myths that mosquitoes prefer women over men or blondes and redheads over those with darker hair. She does, however, play favorites. Type O blood seems to be the vintage of choice. Stinky feet emit a bacterium that woos famished females, as do perfumes...