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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?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

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There are 20 feet of blood vessels in each square inch of human skin.

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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

The chain of infection: preventative measures follow each link of the chain. The chain of infection: preventative measures follow each link of the chain.
Child with bacterial meningitis in an opisthotonic position. Child with bacterial meningitis in an opisthotonic position.
Assessing risk for infection in adults Assessing risk for infection in adults
Laboratory tests to screen for infection Laboratory tests to screen for infection
The five stages of viral infection. The five stages of viral infection.
Sources of hepatitis C infection. Sources of hepatitis C infection.
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