https://www.siliconvalley.com/2021/04/06/a-covid-vaccination-milestone-is-about-to-speed-up-reopening-in-the-bay-area-these-counties-could-benefit/ > Five of the Bay Area’s nine counties could move forward in California’s COVID-19 reopening system this week as the state reaches an encouraging milestone in its vaccination effort. > Officials have said they will loosen the criteria for advancing to the orange and yellow stages of the reopening plan once California distributes 4 million vaccine doses to residents of more than 400 ZIP codes considered most at-risk from the pandemic. Those ZIP codes scored in the bottom 25% of the Healthy Places Index, which ranks areas based on several socioeconomic factors, from education levels to transportation options.