For someone who is so obsessed with the rest of the world getting vaccinated, why is it that Bill and Melinda Gates REFUSE to get their own children vaccinated?

The origin of smallpox is unknown. The finding of smallpox-like rashes on Egyptian mummies suggests that smallpox has existed for at least 3,000 years. The earliest written description of a disease like smallpox appeared in China in the 4th century CE (Common Era). Early written descriptions also appeared in India in the 7th century and in Asia