Question to the Department for Environment, Food and Rural Affairs:

To ask His Majesty's Government what assessment they have made of the risk posed by avian flu, given its spread through the US cattle herd and reports that many infected cattle are asymptomatic; what monitoring is being carried out on UK cattle and other farm animals, wild mammals, and the humans that come into contact with them; and what additional biosecurity measures they are planning or developing.

The Government is in close contact with counterparts in the United States on the incidents of influenza of avian origin in cattle in the USA. We know that the strain of virus (Highly Pathogenic Avian Influenza (HPAI) strain B3.13) involved has not been detected in the UK.

Defra is working closely with the Department of Health and Social Care (DHSC), the UK Health Security Agency (UKHSA), the Food Standards Agency, the Cabinet Office and with international partners on risk assessments to consider the routes of incursion, animal to animal spread and animal to human spill-over and to review our well-tested surveillance mechanisms and preparedness activities in light of this emerging situation.

The Animal and Plant Health Agency (APHA) has assessed the risk to Great Britain of this outbreak in the USA of Influenza A (H5N1) of avian origin in livestock to our own livestock as very low (event is very rare but cannot be excluded). The assessment has been published on gov.uk Avian influenza in cattle in USA (publishing.service.gov.uk) (see attached). The Food Standards Agency (FSA) have assessed the risk to UK consumers from HPAI strain B3.13 in imported milk, dairy products, colostrum and colostrum-based products originating from US dairy cattle as very low with medium uncertainty (Rapid Risk Assessment: Risk to UK consumers from Highly Pathogenic Avian Influenza (HPAI) H5N1 B3.13 in US dairy products | Food Standards Agency) (see attached).

In response to the unprecedented global outbreaks of highly pathogenic avian influenza (HPAI) H5N1 in wild and kept birds, the UK's avian influenza national reference laboratory at the Animal and Plant Health Agency Weybridge laboratory has increased its surveillance in both wild birds and wild mammals and genome analysis of the virus itself while keeping a close eye on its spread in global populations of wildlife. In addition, we have published an ‘Influenza A (H5N1) infection in mammals: suspect case definition and diagnostic testing criteria’ on gov.uk to support veterinary professionals and others in knowing when to report suspicion. The UK case definition for influenza of avian origin in mammals has been updated and now includes a case definition for ungulates including dairy cattle, this in response the emerging situation in cattle in the USA and will be kept under regular review as further information becomes available.

We are monitoring the situation closely but at this time have no reason to suspect the virus is circulating in our cattle, nor is this strain of the virus circulating in Europe. We have had no recent cases of avian influenza in kept birds, or findings of influenza of avian origin in kept or wild mammals, and the risk level from wild birds is low. We have discussed the need for surveillance in wildlife, domestic animals and humans with DHSC and UKHSA and are considering the case for additional surveillance for influenza of avian origin in cattle and how best such animal health surveillance could be undertaken.