Nation Nearly 1 million cases, 4.2% coronavirus positivity rate force California to roll back reopening plans November 12, 2020November 12, 2020Chris Woodyard, USA TODAYComments Off on Nearly 1 million cases, 4.2% coronavirus positivity rate force California to roll back reopening plans The number of tests registering positive for the coronavirus in California rose to 4.2% over seven days in the latest survey, state officials said.