Un-Vaccinated

Being passed from creature to creature almost with the effects of a curse, Un-Vaccinated is a level one spell that is passed through biting. Much like its counterpart Rabies, Un-Vaccinated transforms creatures and slows their moving speed by five. They also have a disadvantage on saving throws. It gives the creature's skin tone a low green hue, yet increases their strength by one throughout the duration of the spell (four rounds). Casting this spell grants the spell caster an advantage on saving throws, and can be recovered after two short rests.