Selective photonic disinfection (SEPHODIS) is an ultrashort pulse laser technology invented by Tsen and colleagues to combat pathogens including viruses and bacteria.[1][2][3][4] SEPHODIS uses extremely brief pulses of light to destroy viral capsids while minimizing collateral damage to human cells and proteins. The technology is being developed as a defense system to rapidly produce vaccines against emerging pathogens, and as a method to safeguard the blood supply.[5]