There is an URGENCY to Innoculate against SmallPOX.
SmallPox is a very horrible illness. There is no cure. Once you get the initial wart-like pustules there is an almost 100% chance of death. It is a slow and agonizing death. The innoculation for this illness only lasts ten years so a person must have a booster every decade or so.
The last such innoculation was in the early 1970's. It is highly contagious. Once contracted it lies dormant in the body up to 30 days. Once it spreads, it spreads in "waves" each wave of deaths increasing exponentionally. Then, followed by a period of "quiet".
The only action is to contain the afflicted region and let the people trapped in that region die. SMALLPOX