These include (1) the institution of a 7-day infection timeframe, (2) the institution of a 14-day repeat infection timeframe, and (3) changing the definition of the date of event from the date of the last element of the infection criteria to the date that the first infection element occurred during the infection window. These modifications to HAI surveillance definitions will each affect the reporting of CAUTIs by changing the time period during which all elements of infection must be present to meet criteria, how new infections are discriminated from previous infections, or how infections are determined to be present on admission versus whether they are healthcare associated. These changes will also improve objectivity and more easily enable transition to electronic surveillance.