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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.
As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.
Blood is approximately twice as thick as water because of the cells and other components found in it.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
Illicit drug use costs the United States approximately $181 billion every year.