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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.
Blood is approximately twice as thick as water because of the cells and other components found in it.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
Vaccines prevent between 2.5 and 4 million deaths every year.