Page 123 - Timeliness of Infectious Disease Notification & Response Systems - Corien Swaan
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Timeliness of infectious disease reporting, the Netherlands, 2003-2017 121
reporting delay, the main decrease was in 2009, the year following the new law (Figure 3).
Timeliness according to the legal timeframe
In 2016–2017, the performance threshold of at least 80% timely notification was met, as 82.3% of all 14,447 included notifications were made within 1 working day (Table 2). This is an important improvement compared with 2008, the last year of the former law, when only 51.3% of notifications were received in time. In 2016–2017, the threshold was reached for the majority of diseases (20/28). The notification timeliness for eight diseases did not fulfil the threshold at that time. The overall reporting delay was also timely, and even better than the no- tification delay, as 98.4% (14,044/14,810) of total cases were reported to the RIVM in time, and almost all diseases (26/28) were reported timely according to the legal timeframe of 1, 3 or 7 days.
Timeliness according to other timeframes
Timeliness of infectious diseases notification with regard to serial interval was good: medians of total local delay for six of eight diseases were within the serial interval in period 3, and the threshold of 80% notifications within the serial interval was reached for five of seven diseases in 2016–2017 (Table 3). Also, me- dians were below one or two incubation times (6/10 and 7/10, respectively) for the majority of diseases in period 3, while the threshold was reached to a lesser extent in 2016–2017 (4/9 and 5/9, respectively). Regarding outbreak control timeframes, only medians of hepatitis A and B and measles fulfilled the out- break control condition in period 3. The percentages of timely notified measles and mumps cases were 72.2 and 49, respectively, close to the 80% thresholds of sufficient timeliness.
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