short supply for covid tests among the omicron variant serve. president biden said the federal government will provide 500 million free at-home testing kits but admits there is more work to do to meet the soaring demand. fox business reporter gerri willis is live in new york city with more on this. good morning, gerri. good morning, that s right. a lot more work to do. concern about the omicron variant is sparking intense demand for the at-home covid test. the fda saying get this, the rapid covid tests may be less effective at detecting the variant. so this in a statement i will quote it directly early data suggests antigen tests do detect the omicron variant but reduced sensitivity and have a harder time finding it. the 500 million tests may be