State Sen. Richard Pan, D-Sacramento, center, with co-author Sen. Ben Allen, D-Santa Monica, background, discusses SB 277, which tightened California’s law on school vaccination. (AP Photo/Rich Pedroncelli, File)
State Sen. Richard Pan, D-Sacramento, center, with co-author Sen. Ben Allen, D-Santa Monica, background, discusses SB 277, which tightened California’s law on school vaccination. (AP Photo/Rich Pedroncelli, File) Rich Pedroncelli AP
State Sen. Richard Pan, D-Sacramento, center, with co-author Sen. Ben Allen, D-Santa Monica, background, discusses SB 277, which tightened California’s law on school vaccination. (AP Photo/Rich Pedroncelli, File) Rich Pedroncelli AP