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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
The horizontal fraction bar was introduced by the Arabs.
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
Women are 50% to 75% more likely than men to experience an adverse drug reaction.
A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.