The vaccine is mixed with two kinds of sugars, then left to dry into a thin film on a membrane, a simple filter. Adding water returns the vaccine to a liquid.
The results appeared in the journal Science Translational Medicine.
Each year, many vaccines must be destroyed because they became too warm or too cold. American researchers have been testing the best ways to store vaccines in refrigerators. Here are some suggestions from the team at the National Institute of Standards and Technology:
Never store vaccines on the door. Opening and closing it changes the temperature too much. Vaccines should also be kept away from the walls of the refrigerator and out of the "crisper" drawers usually found at the bottom. The crispers can get too cold, and the temperature of the walls can change.
Tests also showed that standard-sized refrigerators without a freezer outperformed smaller ones like those popular with college students.
And that's the VOA Special English Health Report, written by June Simms. I'm Barbara Klein.
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2013-11-25
2013-11-25
2013-11-25
2013-11-25
2013-11-25
2013-11-25