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Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
Did you know?
Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.