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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.