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Table 2 Criteria and scores adopted for the choice of municipalities that were to included in the surveillance system

From: Strategies of a thirteen year surveillance programme on Aedes albopictus (Stegomyia albopicta) in southern Switzerland

positivity of ovitraps 1) negative 0
close to municipality with ovitraps positive once a year 1
close to municipality with ovitraps positive several times a year 2
close to municipality with ovitraps regularly positive 3
municipality with ovitraps positive once a year 4
municipality with ovitraps positive several times a year 5
municipality with ovitraps regularly positive 6
stops on the highway hard shoulders 1
gas stations 2
traffic of wares   
commercial customs2) ≤ 0.1 millions/t/year of wares 3
0.1 < x ≤ 2 millions/t/year of wares 6
2 < x millions/t/year of wares 9
carriage free2) x = number of points 3x
companies with customs control2) 1 company 2
2 < x ≤ 4 4
5 ≤ x 6
transport companies x = number of companies x
cargo vessels3) x = number of SBB-Cargo (train cargo service) x
Total value = commercial customs value + carriage free value + companies with customs control value + transport companies value + cargo vessels value
attraction points   
sport centres4) x ≤ 5 1
5 < x ≤ 10 2
10 < x ≤ 20 3
x > 20 4
shopping centres x = number of shopping centers 2x
tourist attractions5) x = number of tourist attractions x
train stations6) regional 1
international 2
airports7) x = number of airports x
Total value = sport centres value + shopping centres value + tourist attractions value + train stations value + airports value
cross-border workers 8) x = number of workers/urban settlement area (km2) x
population 8) x = number of inhabitants/urban settlement area (km2) x
entering cars 8)   
customs crossing ≤ 1 million persons/year 1
1 < x ≤ 5 millions persons/year 2
5 < x ≤ 10 millions persons/year 3
10 < x ≤ 60 millions persons/year 4
traffic on highway exits ≤ 20'000 cars/day 1
20'000 < x ≤ 50'000 cars/day 2
> 50'000 cars/day 3
Total value = customs crossing value + traffic on highway exits value
overnight stays 8) x = number of overnight stays/urban settlement area (km2) x
  1. 1)survey's data (previous years).
  2. 2)AFD - Amministrazione federale delle dogane (Swiss custom administration).
  3. 3)SBB-CFF-FFS.
  4. 4)GIS - Geographical Information System.
  5. 5)Ticino turismo (Ticino tourism).
  6. 6)SBB-CFF-FFS.
  7. 7)Swiss Topo.
  8. 8)USTAT - Ufficio di statistica del Cantone Ticino (Statistic office Canton Ticino).