Those states are not reporting probable cases, according to the daily case count listed on the CDC's website. Probable cases include those that show evidence of an infection without the confirmation of a lab test and cases where coronavirus was listed as a cause or contributing cause of death but are not confirmed with a lab test.
Some of the states with the largest populations -- like California, Florida, New York and Texas -- are among those listed as not reporting probable cases, despite CDC guidance that they should be included in the case count.
This comes as 26 states see an increased or steady rate of new cases.
Accurate rates of new cases are among the metrics that help officials track how the disease is spreading in the US and make decisions about how to reopen and loosen restrictions put in place to mitigate its impact.
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