Volume 21, Number 2—February 2015
Quantifying Reporting Timeliness to Improve Outbreak Control
|Disease||Serial interval distribution, median days (SD)||Symptom onset distribution, median days (SD)||Reporting delay distribution, median days (SD)||Reproduction number, R (range)†||References|
|Hepatitis A||27.5 (4)||28 (9)||8.6 (11.9)||3.33 (3–4)||(7–10)|
|Hepatitis B||47.5 (20)||80 (35)||14.7 (24.3)||1.75 (1–2.5)||(7–9,11)|
|Measles||11.6 (2.4)||11.5 (2.5)||9.0 (12)||8 (8–30)||(7–10,12)|
|Mumps||19.1 (5.4)||19.5 (2.3)||9.0 (13.8)||5.5 (4–7)||(7–10)|
|Pertussis||16 (13)||9 (2.5)||40.8 (24.4)||5.5 (5–6.5)||(7–10,13,14)|
|Shigellosis‡||5 (3.5)||2.5 (1.5)||14.6 (13.8)||3.5 (2–5)||(7–9)|
*All distributions are fitted to log-normal distributions with medians and standard deviations as indicated. Reporting delay distribution of pertussis is an exception, which is fitted to a gamma distribution.
†The reproduction numbers are those used for outbreak control calculations, and the ranges in brackets are those found in the literature.
‡For shigellosis, an average transmission period (serial interval distribution) of 1 wk (median 5 d) was assumed, although in practice shedding continues after that.
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