CNBC's Aditi Roy reports on a spike in Covid-19 cases throughout California as many counties move to new lockdowns. The state now has a 5 percent positivity rate. For access to live and exclusive video from CNBC subscribe to CNBC PRO: https://cnb.cx/2NGeIvi California Gov. Gavin Newsom said his state is “pulling an emergency brake” on the reopening process, placing almost all of California in the most restrictive tier due to spiraling Covid cases. Nearly every California county, or 94% of California’s population, has been moved backward due to a significant change in transmission statewide, Newsom said. A total of 41 counties have now moved backward to “purple,” the most restrictive tier, including Santa Barbara, Santa Clara and Alameda counties. San Francisco County is among nine more counties placed in the second-most restrictive tier due to a spike in cases. Because of the new restrictive tier, San Francisco will be closing non-essential offices and restricting capacity at gyms to 10%. Newsom also announced stronger mask mandates, saying masks must be worn in most cases outside of the house whenever in public, with few exceptions. “Do not gather indoors,” said California’s top health official Dr. Mark Ghaly. “Cases today will end up in our hospital beds in 2 to 3 weeks.” California reported 9,890 Covid cases on Sunday. Newsom said the status of counties which now fall in more restrictive tiers will be assessed on a daily basis instead of weekly. He added he was assessing the “notion of a curfew” for California. » Subscribe to CNBC TV: https://cnb.cx/SubscribeCNBCtelevision » Subscribe to CNBC: https://cnb.cx/SubscribeCNBC » Subscribe to CNBC Classic: https://cnb.cx/SubscribeCNBCclassic Turn to CNBC TV for the latest stock market news and analysis. From market futures to live price updates CNBC is the leader in business news worldwide. The News with Shepard Smith is CNBC’s daily news podcast providing deep, non-partisan coverage and perspective on the day’s most important stories. Available to listen by 8:30pm ET / 5:30pm PT daily beginning September 30: https://www.cnbc.com/2020/09/29/the-news-with-shepard-smith-podcast.html?__source=youtube%7Cshepsmith%7Cpodcast Connect with CNBC News Online Get the latest news: http://www.cnbc.com/ Follow CNBC on LinkedIn: https://cnb.cx/LinkedInCNBC Follow CNBC News on Facebook: https://cnb.cx/LikeCNBC Follow CNBC News on Twitter: https://cnb.cx/FollowCNBC Follow CNBC News on Instagram: https://cnb.cx/InstagramCNBC https://www.cnbc.com/select/best-credit-cards/ #CNBC #CNBCTV