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Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.
Vaccines prevent between 2.5 and 4 million deaths every year.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

