Hon Dr DAVID CLARK (Minister of Health): The latest national data available for cases notified is to the period 18 to 20 April. For this period, 100 percent of close contacts were followed up within three days. National data collected from all public health units requires manual collation from a number of sources. Therefore, there is a time lag between activity and reporting. The close-contact data for probable and confirmed cases notified 21 to 27 April will be available in coming days.