Weekly number of measles cases in the 16 states (Bundeslaender) of Germany for years 2005 to 2007.
"sts" object containing \(156\times 16\)
observations starting from week 1 in 2005.
population slot contains the population fractions
of each state at 31.12.2006, obtained from the Federal Statistical
Office of Germany.
Robert Koch-Institut: SurvStat: https://survstat.rki.de/; Queried on 14 October 2009.
Herzog, S. A., Paul, M. and Held, L. (2011): Heterogeneity in vaccination coverage explains the size and occurrence of measles epidemics in German surveillance data. Epidemiology and Infection, 139, 505-515. doi: 10.1017/S0950268810001664
data(measlesDE) plot(measlesDE) ## aggregate to bi-weekly intervals measles2w <- aggregate(measlesDE, nfreq = 26) plot(measles2w, type = observed ~ time) ## use a date index for nicer x-axis plotting epoch(measles2w) <- seq(as.Date("2005-01-03"), by = "2 weeks", length.out = nrow(measles2w)) plot(measles2w, type = observed ~ time)