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Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.
The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
Vaccines prevent between 2.5 and 4 million deaths every year.