With the delta variant, coronavirus infections are on a sharp increase again in the Bay Area. California recently announced that health care workers and state employees must be vaccinated or get tested weekly and wear masks on the job. There have already been attempts to challenge the legality of similar mandates around the nation. Dorit Reiss, a law professor at UC Hastings who researches the law around vaccines and vaccine mandates, lays out what considerations employers and governments must weigh when it comes to requiring vaccination.