Table 2.

Probability of WNV re-emergence in a given geographical unit (NUTS3 level or equivalent unit for non-EU countries) in a year, according to the number of human cases of WNV reported in that geographical unit in the previous year.

Number of WNV human cases in a given region and year	Number of times that number of WNV human cases in a given region and year have been detected	Probability of WNV re-emergence in that geographical unit in the next year
>15	24	100%
10–15	11	73%
4–9	42	40%
<4	115	16%
Total	192	35%