25 May, 2010: The seasonally vector-free period ends in Denmark at midnight between 26 and 27 May, 2010. The vector surveillance has now trapped insects of the Culicoides sp., including individuals that were blood fed.
Based on the weather prognosis, it is expected that the vector activity will increase.
3 December, 2009: Denmark has declared vector-free period as of 1 December, 2009. This decision is based upon the catches of low numbers of Culicoides sp. and cold weather. In the weeks 45 to 48, decreasing numbers of parous Culicoides were caught. In week 47, 21 parous Culicoides were caught in total, however, in week 48 only two were caught in total. In the following week, the temperatures have shown so far maximum temperatures around 10 degrees Celsius and at least two nights with frost followed by temperatures around the freezing point.
The Danish restriction zone, which includes the entire country, is considered as a bluetongue seasonally vector-free zone from 1 December, 2009, until the end of the vector-free period.
21 April, 2009: The seasonally vector-free period ends in Denmark at midnight between 24 and 25 April, 2009. This is based upon the weather prognosis with temperatures near or above 10 Celsius, which means that local temperatures could be markedly higher favouring development of Culicoides. In addition, the surveillance of Culicoides has now trapped insects of the Culicoides sp., including individuals that were blood fed.
9 December, 2008: Denmark has declared vector-free period from 1 December 2008. This decision is based upon vector catches, which have shown three parous Culicoides in 56 catches from week 46 to week 49 in total. The temperatures in the period from week 46 to week 49 show maximum temperatures around or well below 10 degrees Celsius, and at least three nights with frost.
The Danish restriction zone, which includes the entire country, is considered a bluetongue seasonally vector-free zone from 1 December 2008, until the end of the vector-free period.
In the winter 2007/2008, the seasonally vector-free period was from 21 December, 2007, to
8 April, 2008.