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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.
Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
There are 20 feet of blood vessels in each square inch of human skin.
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.