At least 233 staffers at a pair of San Francisco hospitals have tested positive for COVID-19, the majority of whom were fully vaccinated but became infected with the delta variant. Fifty-five cases were discovered among staff members at Zuckerberg San Francisco General Hospital as of July 31, Cristina Padilla, a public relations officer at the hospital, told The Hill. Of those who tested positive, roughly 75 to 80 percent were fully vaccinated, according to The New York Times. More than 7,000 staff members reportedly work at the facility. The University of California, San Francisco (UCSF) Medical Center, said 183 staff...