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In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.
About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
There are more nerve cells in one human brain than there are stars in the Milky Way.
![Thyroidectomy. In this procedure, the thyroid gland is accessed by a vertical incision through the n](https://biology-forums.com/gallery/47/medium_14755_14_10_12_6_36_53_93901554.jpeg)
![Pulsars are highly magnetized, rotating neutron stars that emit a beam of electromagnetic radiation.](https://biology-forums.com/gallery/47/medium_12359_26_01_13_4_03_53.png)