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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
There are more bacteria in your mouth than there are people in the world.
There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.