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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
There are approximately 3 million unintended pregnancies in the United States each year.
On average, the stomach produces 2 L of hydrochloric acid per day.
A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.