Research "Pathogen Priming" could be legit bioweapon stuff (corona Virus' are good at this. First round is Meh, Primes you for reinfection later. Reinfection is deadly. This is why they quit trying to make vaccine for RSV in the 50s California's Morgues are full beyond capacity right now. Call random mortuary in LA yourself and see if they can receive a body, you will be turned away.