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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.
Blood is approximately twice as thick as water because of the cells and other components found in it.
Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.