Physical fitness is really good
Smallpox<span> vaccine, the first successful vaccine to be developed, was introduced by Edward Jenner in 1796. He followed up his observation that milkmaids who had previously caught </span>cowpox<span> did not later catch </span>smallpox<span> by showing that inoculated</span>cowpox<span> protected against inoculated </span>smallpox<span>.</span>
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Asking your grandparents for information about your family medical history, because knowing what illnesses are common in your family helps you and your doctor know what to monitor closely.
