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California has stopped asking counties to report post-COVID-19 vaccination breakthrough...

Coronavirus vaccines provide durable protection, and boosters probably won’t be...

Bay Area is close to herd immunity. But we may never get there FacebookTwitterEmail The Bay Area has among the best COVID-19 vaccination rates in the United States and several counties are approaching the threshold of herd immunity, where the virus eventually dies out because it can no longer find people to infect. If the region was in a bubble, that could eliminate nearly all coronavirus infections. But with vaccine uptake already waning across California and the U.S. — and vaccines still unavailable to large swaths of the world — the level of global immunity required to squash the pande...

Five years ago, France banned the purchase of sex — but not the sale of it. The prostitition measures aimed to decrease the number of sex workers. The result, however, has seen services pushed into clandestine routes.

Calif. variant is resistant to antibodies, but vaccines should still work By Erin Allday © Lea Suzuki, The Chronicle Early studies show the coronavirus variant that’s spreading widely across California is somewhat resistant to antibodies that fight off infection, but the vaccines still should offer plenty of protection, infectious disease experts say. Antibodies generated by the vaccines, or by previous coronavirus infection, were two to four times stronger against earlier versions of the virus compared to the new variant, scientists at UCSF found in laboratory studies. Th...