Fig. 3.

Temporal patterns of cattle rabies outbreak numbers in Costa Rica (1985–2016). a Annual time series of outbreak numbers in Costa Rica from 1985 to 2016. b Periodogram of the annual time series of outbreak numbers in Costa Rica from 1985 to 2016. The peak power value corresponds at 0.2 cycles per year, indicating that cattle rabies outbreak numbers had an approximate oscillation period of 5 years over the study period. c Barchart of the cumulative number of rabies outbreaks per month during the study period. The highest number of rabies outbreaks occurred in August, September and May. d Boxplots of monthly rabies outbreak numbers. For all months, from January to December, the median value for all monthly boxplots was 0, which suggests that there is no seasonality in the number of monthly cattle rabies outbreaks