
By BY KATIE THOMAS from NYT Health https://ift.tt/2Mj7ihs


The vaccine from Merck & Co. is approved to protect against the Zaire ebolavirus in people 18 and older.
The decision to order the new warnings is based on a review of data from numerous sources, including case reports, observational studies, human trials and animal studies.
In the 20 years since LASIK has been around, doctors in the U.S. have performed more than 19 million of these procedures. There haven't been many high-quality, long-term studies done on the outcomes, but the research that does exist finds the procedure to be safe and effective.