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Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.
Did you know?
There are 60,000 miles of blood vessels in every adult human.
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?
On average, the stomach produces 2 L of hydrochloric acid per day.