Table 4 Duration in days and dates of the seasonally vector-free periods at the 7 collection sites

Nijlen

197 (09.10–22.04)

127 (25.11–31.03)

201 (12.11–31.05)

211 (21.09–19.04)

147 (08.11–03.04)

Varendonk

147 (20.11–15.04)

140 (12.11–31.03)

183 (06.10–06.04)

163 (08.11–19.04)

140 (08.11–27.03)

Neerpelt

190 (16.10–22.04)

199 (07.10–23.04)

– (06.10)

–

–

Frahan

154 (20.11–22.04)

183 (21.10–21.04)

– (17.11)

–

–

Goronne

183 (29.10–28.04)

190 (21.10–28.04)

– (10.11)

–

–

Verlaine

177 (29.10–22.04)

198 (06.10–21.04)

197 (17.11–01.06)

154 (03.11–05.04)

166 (28.10–11.04)

Gembloux

170 (16.10–02.04)

176 (21.10–14.04)

183 (27.10–27.04)

168 (20.10–05.04)

141 (08.11–28.03)

Difference in days^a

50

72

18

57

26