Origins of #inoculation #protovaccines in #china and #india

The origins of inoculation are not entirely clear, but it is believed that the practice of #variolation or the deliberate exposure to #smallpox was first developed in India or China…

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3407399/

#Linktopaper #openaccess

https://journals.sagepub.com/doi/pdf/10.1258/jrsm.2012.12k044