"In the first half of the 19th century, between 40% and 50% of children in the U.S. didn't live past the age of 5. While overall child mortality was somewhat lower in the U.K., the rate remained near 50% through the early 20th century for children living in the poorest slums."
"Multiple technologies now prevent epidemic spread of these and other once-common childhood illnesses, including polio, tetanus, whooping cough, measles, scarlet fever and cholera."
"As a result of these sanitary, regulatory, and medical advances, child mortality rates have sat below 1% in the U.S. and U.K. for the last 30 years."
"Smallpox killed 80% of the children it infected. Tuberculosis killed an estimated 1 in 7 people in the U.S. and Europe, and it was the leading cause of death in the U.S. in the early decades of the 19th century."
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