A retrospective survey of blood donors in the Netherlands showed a seroprevalence of 2.4% before the start of outbreaks (7 ).
At the start of the outbreak, RIVM convened a national outbreak management team to discuss a strategy regarding targeted vaccination campaigns for infants living in communities with low vaccination coverage and for previously unvaccinated persons.
The probability of those observations in which the individual remained uninfected throughout the infection is given by the probability of being susceptible at the start of the outbreak and escaping infection for the whole 364 day outbreak (C 364,i)) plus the probability of having been previously infected, before the start of the outbreak: (5) s (a i, n i ) C (364, i ) + 1 − s (a i, n i ).
For more informative comparisons of the performance in different determinants, we plotted sensitivity-timeliness curve [ 33], which measured the proportion of outbreaks that an algorithm detected within several days from the start of the outbreak.
To meet our secondary goal, we will signal the end of the influenza outbreak (or season) as the first time after the start of the outbreak that the EWMA falls below the threshold.
Most of these mumps complications were attributable to the mumps outbreak because episodes with these codes were negligible before the start of the outbreak period.
In the four outbreak magnitudes, the MPM had a higher probability of detecting outbreak than CUSUM and EWMA within all days from the start of the outbreak; the CUSUM method had a better sensitivity than EWMA in 2.0,3.0 magnitude.
At the three levels, the MPM had a higher probability of detecting the outbreak than CUSUM and EWMA within all days from the start of the outbreak; the sensitivity of CUSUM and EWMA was very closely changed over time.
In the three incubation categories, the MPM had a higher probability of detecting the outbreak than CUSUM and EWMA within all days from the start of the outbreak; the sensitivity changes of CUSUM and EWMA over time were very close.
