[03 September/The Country] Biosecurity New Zealand reports it is responding to a possible detection of a poultry virus, Infectious Bursal Disease Virus type 1, in a layer egg farm in Otago. No birds at the Mainland Poultry farm in Waikouaiti have disease symptoms and the farm itself is under voluntary biosecurity controls as a precautionary measure, stated Biosecurity New Zealand Response Manager David Yard. Preliminary test results indicate the virus was highly likely to be present on the Mainland Poultry property, but further testing overseas was required to confirm this. Those results are expected around mid-September. The virus can affect the immune system of young chickens but it poses no risk to human health or the health of other animals. Mr Yard reported that while Biosecurity New Zealand is waiting for final confirmation from the overseas laboratory, it would stop issuing certificates for the export of chicken products to four countries that require a guarantee that New Zealand is IBDV type 1-free, including Australia who is the largest importer of New Zealand chicken meat. Biosecurity New Zealand reported it is now working with the egg and poultry industries to understand, if confirmed as positive, the scale of the situation and what control or eradication measures were available.