Usutu virus continues to spread across Europe: first report of multiple molecular detections of the USUV Africa 2 and Africa 3 lineages in free-living and captive birds in Poland, July–November 2023

Table 1 Background information on avian carcasses obtained for the present study from different locations in Poland

Sample source	Sample collection		No. of samples
Sample source	Time period	Location	No. of samples
Field Bird Ringing Station “Bukowo-Kopań”	Early Sep to late Oct	West Pomeranian Voivodeship	91
Field Bird Ringing Station “Mierzeja Wiślana”	Mid-Sep to Early Nov	Pomeranian Voivodeship	192
Field Ornithological Station “Vistula Camp”	Late Jul to late Oct	Masovian Voivodeship	8
Field Ornithological Station “Vistula Camp”	Late Nov	Kuyavian-Pomeranian Voivodeship	1
Rehabilitation Centre for Birds “Bird Asylum”	Early Oct	Masovian Voivodeship	6
Forest Rehabilitation Centre For Wild Birds and Mammals “Przytulisko”	Late May to late Oct	Podlaskie Voivodeship	35
HPAI passive surveillance in wild birds	Late Jul	Lublin Voivodeship	6
	Late Jul	Podlaskie Voivodeship	4
	Mid-Oct	Lubuskie Voivodeship	1
	Early Jul to late Sep	Lower Silesian Voivodeship	2
	Late Jul	Silesian Voivodeship	4
	Early Jul	Świętokrzyskie Voivodeship	1
	Late Jun to mid-Sep	Masovian Voivodeship	3
	Early Jul	Wielkopolskie Voivodeship	1
Other (accidental findings)	Early Oct	Lublin Voivodeship	2
Total number of avian carcasses			357

ISSN: 1297-9716