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Use "vaccines" in a sentence
"The aluminum contained in vaccines is similar to that found in a liter (about 1 quart or 32 fluid ounces) of infant formula."
"Another product from animals that may be used in vaccines is gelatin (see gelatin allergies)."
"Although a delay in vaccines is recommended for children with severe illnesses until the symptoms of illness resolve, this recommendation is not based on the likelihood that the child will have an inadequate immune response to the vaccine."