
U.S. President George Washington issued the first presidential vaccine mandate, requiring all soldiers within the continental army to become vaccinated against smallpox on February 5, 1777. 90% of deaths during the American Revolution were due to disease, with smallpox being the most prevalent and difficult pathogen for the military to control. Immunization was viewed as an achievable solution to a virtually insurmountable problem as death from smallpox plunged from 30% to 2% after a becomming immunized. Vaccination, or “variolation” as it was referred to during the era, was achieved by taking a small piece of an active smallpox sore from an infected person, and then introducing it to the person being inoculated via inhalation or by scratching their arm and introducing the virus by touch. The mandate, although initially detested, became highly successful in its pursuit of lowering soldier mortality rate, with 40,000 soldiers vaccinated by the end of 1777



The Iban people of Sarawak, Malaysia practiced head hunting until the middle of the 20th century. Iban warriors were infamous within the region for decapitating their conquered victims to save the head as a trophy. Heads were strung and hung together at the top of the loadbearing posts of the long houses which the Iban continue to live in during the modern day, housing up to 25 families in a single building. Every month the Iban light small candles or fires below the hanging skulls to keep them warm because if they do not, they believe the spirits of the vanquished enemies will come back to haunt the dreams of the Iban. This practice was used as a right of passage and milestone mark for young Iban men throughout history, with young warriors forced to kill an enemy within the jungle and then bring the head of that enemy back to their home in order to bless it for everyone in the community. It was also common practice for Iban women to carry these skulls up and down the veranda of the longhouse to signify celebration for the bravery of the males of their family



