The Center for Disease Control and Prevention (CDC) estimates that one in six Americans (48 million people) become sick from food poisoning each year. These incidents send 128,000 Americans to the hospital, and an estimated 3,000 die annually from foodborne illnesses. Food safety is especially important as we approach Memorial Day weekend. This weekend traditionally marks the beginning of summer activities, many of which will involve preparing and serving food for family and friends.

Herd immunity occurs when a significant portion of a population becomes immune to an infectious disease, limiting disease spread. When there are limits on the spread of the disease, even those not already immune have a reduced risk of exposure. Reducing the risk of disease spread is especially critical in protecting individuals who can’t be vaccinated. These would include newborns, those with compromised immune systems, and those who cannot tolerate the vaccine.

Smallpox was a severely infectious disease caused by the variola virus. It undoubtedly caused millions of deaths and is believed to have existed since the days of ancient Egypt over 3,000 years ago. It was contagious, spreading from one person to another. People who had smallpox typically presented with a fever and a distinctive, distinct skin rash.