Highly pathogenic avian influenza (HPAI) in the UK, and Europe - Gov.uk
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Department for Environment, Food and Rural Affairs Animal & Plant Health Agency Advice Services Team - International Disease Monitoring Updated Outbreak Assessment #13 Highly pathogenic avian influenza (HPAI) in the UK, and Europe 26 January 2021 Ref: VITT/1200 HPAI in the UK and Europe Disease Report Since our last report (19 January), in the United Kingdom; there have been no new outbreaks of highly pathogenic avian influenza (HPAI) H5N8 in poultry in GB and Northern Ireland. There have been four new cases of HPAI H5N8 in wild birds (one in England and three in Scotland). According to OIE, elsewhere in Europe since 19 January, HPAI H5N8 has been reported in poultry in France (102), Germany (3), Poland (2) and Ukraine (1). HPAI H5N8 in wild birds has been reported in the Czech Republic (1), Denmark (15), Finland (1), France (1), Germany (3), Ireland (3), Italy (1), Norway (3), Poland (1), Spain (1) and Sweden (2). HPAI H5Nx (N untyped), has been reported in wild birds in Belgium (1) and in Romania (2). HPAI H5N3 has been reported in wild birds in Germany (2) and Ireland (1). HPAI H5N5 has been reported in poultry in Sweden (1), and in wild birds in Denmark (1) and Germany (1). 1
Department for Environment, Food and Rural Affairs Animal & Plant Health Agency Advice Services Team - International Disease Monitoring Situation Assessment Table 1: Summary of confirmed outbreaks of HPAI H5N8 in poultry and captive birds in the UK to 26 January 2021 Date HPAI Location, H5N8 Description Status County confirmed HPAI H5N8 in Poultry 3 near Frodsham, Broiler breeder All surveillance completed, zones November Cheshire rearer chickens lifted, premises remain under restriction as per OIE recommendations 10 near Leominster, Broiler breeder All surveillance completed, zones November Herefordshire chickens lifted, premises remain under restriction as per OIE recommendations 23 near Melton Poultry and captive All surveillance completed, zones November Mowbray, birds lifted, premises remain under Leicestershire restriction as per OIE recommendations 29 near Rearing turkeys All surveillance completed, November Northallerton, zones lifted, premises remain Hambleton, North under restriction as per OIE Yorkshire recommendations 01 near Rearing turkeys All surveillance completed, December Northallerton, zones lifted, premises remain Hambleton, North under restriction as per OIE Yorkshire recommendations 04 near Rearing turkeys All surveillance completed, zones December Attleborough, lifted, premises remain under Breckland, restriction as per OIE Norfolk recommendations 05 near King’s Lynn, Rearing turkeys All surveillance completed, zones December Norfolk lifted, premises remain under restriction as per OIE recommendations 2
Department for Environment, Food and Rural Affairs Animal & Plant Health Agency Advice Services Team - International Disease Monitoring 15 near Willington, Captive birds and All surveillance completed, zones December Derbyshire poultry lifted, premises remain under restriction as per OIE recommendations 19 Island of Sanday, Small commercial All surveillance completed, zones December Orkney Islands free range laying lifted, premises remain under flock restriction as per OIE recommendations 19 Near Gillingham, Backyard poultry All surveillance completed, zones December North Dorset lifted, premises remain under restriction as per OIE recommendations 20 Near Commercial duck All surveillance completed, zones December Attleborough, premises lifted, premises remain under Breckland, restriction as per OIE Norfolk recommendations 28 Near Great Backyard poultry Protection Zone lifted and December Ellingham, replaced with Surveillance Zone Norfolk which is still in place, surveillance ongoing 28 Near Ickburgh, Commercial duck Zones still in place, surveillance December Norfolk rearing premises ongoing 29 Near Aylesbeare, Backyard poultry Protection Zone lifted and December Devon replaced with Surveillance Zone which is still in place, surveillance ongoing 06 Ballymena, Commercial layer Zones still in place, surveillance January County Antrim rearer premises ongoing 12 Lisburn, County Commercial layer Zones still in place, surveillance January Antrim ongoing HPAI H5N8 in Captive Birds 20 near Stroud, Captive birds All surveillance and sampling on November Gloucestershire IP completed, zones lifted. All birds on the premises have now 3
Department for Environment, Food and Rural Affairs Animal & Plant Health Agency Advice Services Team - International Disease Monitoring tested negative twice, 21 days apart. 13 near Droitwich Captive birds No zones implemented December Spa, Worcestershire Since our last report on 19 January, there have been no new outbreaks in domestic poultry reported in GB. To 26 January 2020, there have been thirteen outbreaks of HPAI H5N8 in poultry confirmed on premises in England, and one outbreak confirmed on a premises in Scotland. There have also been two reports of HPAI H5N8 in captive birds in England (Table 1), and one report of H5N1 in backyard chickens, in England (Table 2). Since our last report on 19 January, in Northern Ireland, there have been no new outbreaks of HPAI H5N8 confirmed in domestic poultry; and no further reports of HPAI H5N8 in wild birds. The total number of HPAI outbreaks in poultry and/or captive birds in the UK to 18 January is 19. Table 2: Summary of confirmed outbreaks of HPAI H5N1 in poultry and captive birds in the UK to 26 January 2021. Date HPAI Location, County Description H5N1 confirmed 18 December Near Hawes, Richmondshire, Backyard chickens North Yorkshire The above map shows the concentration of wild bird cases in north-western Europe, with relatively few in southern or central Europe. To 26 January, a total of 292 HPAI cases have been reported in wild birds in GB (see Table 3 below), with most in England, and only a few in Scotland and Wales. For further details, please see the report (updated weekly) on findings of HPAI in wild birds in GB at: https://www.gov.uk/government/publications/avian-influenza-in-wild-birds 4
Department for Environment, Food and Rural Affairs Animal & Plant Health Agency Advice Services Team - International Disease Monitoring Table 3: Wild bird cases in England, Wales, and Scotland that have tested positive for HPAI H5N1, H5N5, H5N8 and H5Nx to 26 January 2021. Pathogenicity testing has not been completed for all samples as yet. Grand Country / species H5N1 H5N5 H5N8 H5Nx Total England 7 1 254 7 269 Black Swan 11 11 Brent Goose 6 6 Buzzard 2 1 3 Canada Goose 1 24 25 Great White Egret 1 1 Grey Heron 1 1 Greylag goose 8 2 10 Herring Gull 2 2 Kestrel 1 1 Lesser Black Backed Gull 1 1 Lesser Black headed Gull 1 1 Mixed Avian 1 1 Mute Swan 5 1 153 1 160 Peregrine Falcon 1 1 Pink footed goose 2 2 Shelduck 1 1 Sparrow Hawk 1 1 Unspecified 1 1 Unspecified Goose 1 1 Unspecified Swan 11 11 Whooper Swan 21 2 23 Wigeon 1 1 Common Buzzard 1 2 3 Red Kite 1 1 Wales 5 1 6 Little Grebe 1 1 Mute Swan 5 5 Scotland 15 2 17 Greylag goose 1 1 Mute Swan 5 5 Unspecified Swan 4 4 Whooper Swan 4 4 Knot 1 1 Red Knot 1 1 2 Grand Total 7 6 270 9 292 5
Department for Environment, Food and Rural Affairs Animal & Plant Health Agency Advice Services Team - International Disease Monitoring HPAI in Europe since 19 January 2021 Table 4: Current outbreaks of HPAI H5 in domestic poultry and cases in wild birds (since 19 January), in Europe, excluding the UK, according to OIE reporting. Please note that this is a rapidly changing picture, with new disease reports being made to the World Organisation for Animal Health (OIE) on a regular basis. H5 H5N3 H5N5 H5N8 Country Total Wild/Captive Wild/Captive Wild/Captive Wild/Captive Poultry Poultry Birds Birds Birds Birds Belgium 1 1 Czech 1 1 Republic Denmark 1 15 16 Finland 1 1 France 102 1 103 Germany 2 5 3 3 13 Ireland 1 3 4 Italy 1 1 Norway 3 3 Poland 2 1 3 Romania 2 2 Spain 1 1 Sweden 1 2 3 Ukraine 1 1 Total 3 3 1 6 108 32 153 Since 19 January, Belgium has reported one case of HPAI H5 in wild birds: a European Herring Gull (Larus argentatus) in East Flanders. The Czech Republic has reported one case of HPAI H5N8 in wild birds: a Mute Swan (Cygnus olor) in the region of South Bohemia. Denmark has reported one case of HPAI H5N5 in wild birds, and 15 cases of HPAI H5N8 in wild birds. The case of HPAI H5N5 was on the island of Rømø (a Barnacle Goose (Branta leucopsis)). The majority of the HPAI H5N8 cases were in the regions of Mid and North Jutland. The species included: Common Buzzard (Buteo buteo), Greylag Goose (Anser anser), Northern Goshawk (Accipiter gentilis), Peregrine Falcon (Falco peregrinus) and Whooper Swan (Cygnus cygnus). Finland has reported one case of HPAI H5N8: a released Common Pheasant (Phasianus colchicus) in its Southern Finland province. 6
Department for Environment, Food and Rural Affairs Animal & Plant Health Agency Advice Services Team - International Disease Monitoring France has reported 102 new outbreaks of HPAI H5N8 in poultry. As with our previous report, the majority (77) were in the department of Landes in the south-west of France, and of these the majority (65) were among foie gras producing duck farms. Other outbreaks in duck farms were reported in the department of Gers (11) and the department of Pyrénées- Atlantiques (12), also in the south-west of France. Single outbreaks were also reported from the department of Hautes-Pyrénées (also duck) and the department of Haute- Garonne (multi-species). One case of HPAI H5N8 in wild birds (Mute Swan (Cygnus olor)) was reported from ponds in the department of Loire. Germany has reported two new outbreaks of HPAI H5N8 in poultry. Both were in Lower Saxony (in a turkey and a duck farm). One case of HPAI H5N8 (in the state of Bremen), although reported to the OIE as HPAI in poultry, lists its species as Anserinae (unspeciated). Three cases of HPAI H5N8 in wild birds were reported from the states of Bayern (an unspeciated swan), North Rhine-Westphalia (unspeciated Accipitridae) and Schleswig-Holstein (also an unspeciated Accipitridae). Two cases of HPAI H5N3 in wild birds were reported from Schleswig-Holstein (both unspeciated Charadriidae). Five cases of HPAI H5N5 in wild birds were also reported: four from Schleswig-Holstein (unspeciated Accipitridae and Anserinae), and one from Thuringen (an unspeciated Swan). Ireland has reported three cases of HPAI H5N8 in wild birds. These were in County Cork and County Louth (Whooper Swan (Cygnus cygnus)); and in Country Wicklow, a Mute Swan (Cygnus olor). One case of HPAI H5N3 in wild birds was also reported in County Louth (unspeciated Charadriidae). Italy has reported one case of HPAI H5N8 in wild birds. This was in the northern region of Veneto; a Common Buzzard (Buteo buteo). The bird was collected by wildlife rescue as it was showing neurological symptoms (lack of wing coordination). Norway has reported three cases of HPAI H5N8 in wild birds. All were in the county of Hordaland in south-east Norway. The species were Mute Swans (Cygnus olor) and a Mew Gull (Larus canus). Poland has reported two outbreaks of HPAI H5N8 in poultry. Both were in the province of Kujawsko-Pomorskie (turkeys and laying hens). One case of HPAI H5N8 was also reported. This was in the province of Greater Poland Voivodeship (three Mute Swans (Cygnus olor)). Romania has reported two cases of HPAI H5 in wild birds. These were reported from the county of Constanta (near to the main city of the same name on the Black Sea). The species were Whooper Swans (Cygnus cygnus). Spain has reported one case of HPAI H5N8 in wild birds. This was in the region of Catalonia in the north-eastern corner of Spain. The species was a Greylag Goose (Anser anser). 7
Department for Environment, Food and Rural Affairs Animal & Plant Health Agency Advice Services Team - International Disease Monitoring Sweden has reported one outbreak of HPAI H5N5 in poultry. This was at a commercial premises of 1,056,800 laying hens in Kalmar County in the south-east of the country. There were two cases of HPAI H5N8 in wild birds. Both were in the southernmost county of Skåne. The species were a Barnacle Goose (Branta leucopsis) and a Peregrine Falcon (Falco peregrinus). Ukraine has reported one outbreak of HPAI H5N8 in poultry; a backyard premises (birds unspecified) in the province of Kiev in central-northern Ukraine. Trends in Europe Looking at the overall trends in Europe, there was a small increase in the number of wild bird cases in the first three weeks of January following the decrease in rate of new cases in November/December, although this is considerably smaller than the increase in wild bird cases report in early 2017 (so far). To 25 January 2021, this year there have been 93 wild bird cases of 844 in total since October; of which 38 were reported to OIE on 22 January. At this stage in the 2016/17 epizootic there had been 625 wild bird cases, with cases rising to over 1,000 by mid-February 2017 in the second peak. For poultry, overall the number of outbreaks reported are reducing (particularly in Germany and Poland). The exception is France, which has reported a large increase in numbers as H5N8 spreads though the duck industry in the south-west. In south-east Europe, HPAI has not obviously spread, with a few wild bird cases on the Black Sea in Romania and the Czech Republic and no further reports in Hungary. Implications for the UK The detection of three HPAI H5 subtypes in the same epidemic event is unparalleled in the UK. All these viruses are genetically closely related through their H5 haemagglutinin gene, which is the key viral gene influencing pathogenesis, host range, transmission, and host immunity. Continued virus change by genetic reassortment in wild birds is not unexpected, and further genetic variation at genome level may be expected as the epidemic progresses. Surveillance within the disease control zones continues, and results of investigations will be published in a comprehensive epidemiological report. The migration season for wild waterfowl to overwinter in the UK has by and large ended, and numbers are expected to have peaked in December and January, depending on the species and the weather conditions in Continental Europe. A large population of migratory waterfowl are still present however, and will not be leaving the UK until March/April. Moreover, the higher survival rate of the virus in the environment during winter means the risk of environmental transmission remains, and hence the continued risk of secondary spread into indigenous UK wild bird species. Higher environmental temperatures, together with increasing sunlight intensities will reduce environmental levels of H5N8 and the associated risks in the spring. As mentioned above, a second peak occurred at this time of year in the 2016/17 H5N8 8
Department for Environment, Food and Rural Affairs Animal & Plant Health Agency Advice Services Team - International Disease Monitoring epizootic. Monitoring weekly changes over the next few weeks is therefore important with regard to the emergence of a second peak of disease in the UK and Europe. Following confirmation of cases of both HPAI H5N8 and H5N1 and low pathogenicity avian influenza (LPAI) H5N2 in poultry, the UK is no longer free from notifiable avian influenza under the World Organisation for Animal Health (OIE) rules. Where disease is confirmed, measures are put in place in accordance with Council Directive 2005/94/EC. The EU will put safeguard measures in place, meaning that no trade with the EU in live poultry or poultry products will be permitted from disease control zones. Public Health England has confirmed that the risk to public health is very low from all three HPAI strains detected and characterised to date (H5N8, H5N5, H5N1), and the Food Standards Agency has said that avian influenza does not pose a food safety risk for UK consumers. International Trade All outbreaks have been reported to the OIE to provide the necessary transparency required for maintaining international trade. Although the UK has temporarily lost its OIE country freedom status from HPAI, it is applying effective regionalisation as well as compartmentalisation, in order to maintain safe trade from unaffected populations of high value and high biosecurity commercial poultry. This is supported by the ongoing surveillance, as well as the safeguards applied via the APHA Centre for International Trade, and the rigorous and standardised certification process by Official Veterinarians. Conclusion The risk of HPAI incursion in wild birds in GB remains VERY HIGH. The overall risk of exposure of poultry in GB remains MEDIUM (with stringent biosecurity) TO HIGH (where biosecurity is not adequate). An Avian Influenza Prevention Zone is in place in England, Scotland and Wales and the UK Chief Veterinary Officer, alongside the CVOs from Scotland, Wales and Northern Ireland are urging bird keepers across the UK to take additional biosecurity measures; in order to prevent further outbreaks of avian influenza in the UK. It is a legal requirement for all bird keepers to keep their birds indoors and to follow strict biosecurity measures in order to limit the spread of and eradicate the disease. These housing measures build on the strengthened biosecurity regulations that were brought in as part of the Avian Influenza Protection Zone (AIPZ) on 11 November 2020. If you keep poultry (including game birds or as pets), you should follow our biosecurity best practice advice, which can be found here: https://www.gov.uk/guidance/avian-influenza- 9
Department for Environment, Food and Rural Affairs Animal & Plant Health Agency Advice Services Team - International Disease Monitoring bird-flu#biosecurity-advice Remain vigilant for any signs of disease in your flock and report any sign of avian influenza to Defra Rural Services Helpline on 03000 200 301. Further information is available here: https://www.gov.uk/guidance/avian-influenza-bird-flu including updated biosecurity advice for poultry keepers for England; https://gov.wales/avian-influenza for Wales and; http://gov.scot/avianinfluenza for Scotland. The OIE/FAO International Reference Laboratory/UK National Reference Laboratory at Weybridge has the necessary ongoing proven diagnostic capability for these strains of virus, whether low or high pathogenicity AI, and continually monitors changes in the virus. We will continue to report on any updates on the situation in Europe and, in particular, any changes in disease distribution or wild bird movements which may increase the risk to the UK. We ask that the public use the Defra helpline (Tel: 03459 33 55 77) to report findings of any dead wild birds. In particular, any wild ducks, wild geese, swans, gulls, or birds of prey. Authors Anthony Pacey Dr Paul Gale Dr Francesca Gauntlett References All outbreaks and cases were taken from the World Organisation for Animal Health (OIE). Please note that changes in format and level of detail are due to the change of data source for this report, from EU’s Animal Disease Notification System (ADNS) to World Organisation for Animal Health (OIE). https://www.daera-ni.gov.uk/articles/avian-influenza-ai https://www.gov.uk/guidance/avian-influenza-bird-flu#trade-import-and-export-issues IZSVe (2021) Number of highly pathogenic avian influenza positive events notified per poultry category each week from September 2020. (https://www.izsvenezie.com/documents/reference-laboratories/avian-influenza/europe- updates/HPAI/2020-1/total-events.pdf ). 10
Department for Environment, Food and Rural Affairs Animal & Plant Health Agency Advice Services Team - International Disease Monitoring © Crown copyright 2021 You may re-use this information (excluding logos) free of charge in any format or medium, under the terms of the Open Government Licence v.2. To view this licence visit www.nationalarchives.gov.uk/doc/open-government-licence/version/2/ or email PSI@nationalarchives.gsi.gov.uk This publication is available at https://www.gov.uk/government/collections/animal- diseases-international-monitoring Any enquiries regarding this publication should be sent to us at iadm@defra.gov.uk 11
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