https://www.mercurynews.com/2020/04/21/coronavirus-deaths-in-california-slow-as-total-cases-near-34000/ > There was a spike in California’s coronavirus cases Monday, but a backlog of tests at one lab in Los Angeles was responsible for most of the increase. > California added more than 2,300 positives to its count Monday, the most new cases in a day since the onset of the outbreak, but nearly 1,200 were from a week’s worth of tests at a single laboratory.