The deadly H5N1 strain was identified in the republic of Adygeya, a region in the North Caucasus. Russian reports also indicate there is a possibility of two more outbreaks on farms outside Moscow.
Alexei Alexeyenko, spokesman for animal and plant health watchdog Rosselkhoznadzor says he expects confirmation of the presence of the virus in these regions within the next two days, reports Scientific American.
Alexeyenko says, "It looks like it's H5N1 again, as the pattern appears to be the same as in the previous cases."
Russia's Emergencies Ministry said in a statement that 1,500 domestic fowl had been culled since February 9 to prevent the spread, although over 333 birds have died of the virus.
Outbreaks of H5N1 have so far been confirmed in Moscow's Sadovod pet market and in five districts of the Moscow region; Domodedovo, Odintsovo, Podolsk, Naro-Fominsk and Taldom.
Although the deadly disease has claimed hundreds of lives mainly in Asia, no human cases of bird flu have been recorded in Russia.


