Romania has detected new cases of suspected bird flu in the Danube delta.
"A swan tested positive with [bird flu] antibodies close to the border with Ukraine, near the village of C.A. Rosetti," Romanian Agriculture Minister Gheorghe Flutur said.
"A few swans in Maliuc and a wild duck in Ceamurlia de Jos also tested seropositive."
The village of C.A. Rosetti is 10 kilometres away from the border with Ukraine, in southeastern Romania .
Romania said yesterday the bird flu outbreak was limited to Ceamurlia de Jos and Maliuc, 40 kilometres to the north. All 21,000 domestic birds in these two villages have been culled.
On Saturday, British tests identified the H5N1 strain of the disease in three ducks found dead in Ceamurlia de Jos - the first incidence in mainland Europe of H5N1, which has killed more than 60 people and millions of birds in Asia since 2003.
Romania has not reported any cases of bird flu in humans.
Turkey, which also detected the H5N1 strain in birds, tested nine people for possible bird flu last week, but no immediate sign of illness was detected.
Greece is conducting tests on a turkey with bird flu found on an Aegean island to establish whether it was infected with the deadly strain.