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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.
By definition, when a medication is administered intravenously, its bioavailability is 100%.
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.
More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.