This COVID-19 self-checker is not a qualified medical diagnosis. This COVID-19 self-checker algorithm was originally developed by CDC for use as an interactive “bot” experience. CDC does not guarantee the accuracy of any non-U.S. Government version(s) of a COVID-19 self-checker algorithm. The U.S. Government does not make any warranty of any kind, either expressed or implied, for any non-U.S. Government version of the COVID-19 self-checker algorithm . Use by a non-U.S. Government organization or enterprise does not imply a U.S. Government endorsement of any one particular product, service, or enterprise or that this use of the COVID-19 self-checker algorithm represents the official views of the U.S. Government.