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Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
Patients who have undergone chemotherapy for the treatment of cancer often complain of a lack of mental focus; memory loss; and a general diminution in abilities such as multitasking, attention span, and general mental agility.
Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
Did you know?
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.