federal contractors. many people have recovered from covid and also have strong immunity through prior infection. reporter: a cdc study of 7,000 people hospitalized with covid like illness published at lunchtime states we now have additional evidence that reaffirms the importance of covid-19 vaccines even if you have had prior infection. vaccination can provide a higher more robust and more consistent level of immunity. in rhode island, a mandate kicks in for state health workers sunday. there are holdouts. we ll work on other plans to activate strategies including the national guard if necessary. reporter: in iowa, lawmakers passed a gill granting unp unproimt unemployment benefits for anyone fired and in oakland, california, the school board voted to unenroll