Bay Briefing: California is reopening. Is that risky? FacebookTwitterEmail Alvin Chong receives the Moderna COVID-19 vaccine from William Wohlfeiler, San Francisco Department of Public Health nursing student, at the Southeast Health Center in San Francisco.Lea Suzuki / The Chronicle Good morning, Bay Area. It’s Friday, April 2, and California’s underwater meadows are helping reverse one symptom of climate change. Here’s what you need to know to start your day. The rules still apply With little fanfare, nearly 6 million more Californians became eligible for coronavirus vaccinations Thursday when the state opened the door to people ages 50 to 64 — and the first thing many did was search for an appointment — some were lucky, others frustrated.