User:Tinybubi/sandbox

COVID-19 Origin Scenarios
Nature-only scenarios
 * A: Natural spillover (bats to humans or bats + intermediate animal to humans)

Lab-research related scenarios
 * B: Sampling and sequencing pathogens from animals or people
 * C: Culturing and infection assays in cells or animal models
 * D: Minor genetic engineering (e.g. passaging for virulence)
 * E: Major genetic engineering (e.g. passaging for transmissibility and virulence and antigenicity in same chimera)

Other scenarios
 * F: Cold chain trade inside China (not international trade)
 * G: Magical Meteorites