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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).
Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
Cyanide works by making the human body unable to use oxygen.
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.