Malaria is caused by four different species: Plasmodium falciparum, P. malariae, P. ovale and P. vivax. The disease causes anemia in sufferers.Know More
Between 300 and 500 million people a year are infected with malaria, and 1 million die a year from the disease. P. falciparum causes the most severe form of the disease, but malaria is most commonly caused by P. vivax.
The Anopheles mosquito carrying a Plasmodium species bites a human. This process introduces the sporozoites of the malarial protist into the human body. These sporozoites enter the hepatocytes, the liver cells, and multiply. The progeny of the sporozoites, called merozoites, then enter the bloodstream to infect the red blood cells. The red blood cells are then destroyed by the merozoites, thus releasing the merozoites and causing anemia.Learn more about Cold & Flu
Malaria is caused by a bite from a parasite-infected mosquito. According to WebMD, five species of parasites infect people. They are mainly found in the tropics and subtropics near the equator of Africa and South America. The bite of an infected P. falciparum mosquito can be life-threatening.Full Answer >
Coughs are caused by flus and colds, which are triggered by viruses; allergies and asthma as the lungs react to allergens; irritants such as perfumes, cigar smoke and cold air; acid reflux when stomach acids irritate the trachea; sleep apnea; lung inflammation; and drug reactions, according to WebMD. A cough is a protective reaction, as it tries to remove particles that are foreign in the trachea or lungs.Full Answer >
Excess mucus draining down the back of the throat may be caused by a cold, the flu, allergies, a sinus infection or certain medications, according to WebMD. A small amount of mucus is always present in the throat, but conditions such as these cause mucus volume to increase.Full Answer >
According to WebMD, cold sores are caused by the herpes simplex virus, which is contagious. The virus is contagious via direct or indirect oral contact, which means that it may be spread by kissing, sharing cups or utensils, or sharing hygiene supplies such as towels and razors.Full Answer >