asked Her Majesty's Government:
Whether they have identified any other countries with H5N1 avian flu infections with a sufficiently similar gene nucleotide sequence to suggest that they might have a link to the outbreaks in Hungary and Suffolk.
The epidemiological investigation is ongoing and, as yet, we have not been able to rule out any method of introduction.
At present, genetic sequencing of isolates of the H5N1 virus has not revealed another virus similar to that found in Hungary and Suffolk. As part of the ongoing investigation, we are investigating whether the outbreaks in England and Hungary came from a common third source. A full report will be published when the investigation is complete. It is likely that that will take a few weeks yet.