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Table 3 Priorities given to municipalities in joining the surveillance system

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

Index High priority Medium priority Low priority
positivity >3 3 <3
stops on the highway >1 1 0
traffic of wares >9 4-9 <3
attraction points >9 7-9 <6
cross-border workers >800 500-800 <500
population >3500 2500-3500 <2500
entering cars >4 3-4 <3
overnight stays >200000 100000-200000 <100000
  1. Note: If less of 5% of municipality territory is below 400 m a.s.l. the municipality was not included in the survey. For the other municipalities a decreasing gradient of priority index going from positivity index to overnight stays index was applied.