This past week, only 143 firefighters visited one of the department’s vaccination centers, according to data released by the city Friday night. So far, 1,944 of the agency’s just under 3,400 members have been inoculated, leaving 4 in 10 vulnerable to the highly infectious coronavirus.

The reluctance of L.A. firefighters adds to the list of healthcare workers in the state who are declining to take the vaccine, a trend that health experts say could have serious public health implications.