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Did you know?
Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
Did you know?
The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.
Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.