A 53-year-old woman died of A/H1N1 flu in Moscow on Tuesday, bringing the country's death toll from the epidemic to four, Russian news agencies reported.
"We have just received this report (of a death) from the Moscow health department," RIA Novosti quoted a health ministry official as saying, Xinhua reported .
The patient's A/H1N1 flu infection was complicated by other health problems she had, according to Interfax.
Earlier in the day, the health ministry reported three fatal cases in Russia, all in eastern Siberia's Transbaikal region.
Russia's chief sanitary official, Gennady Onishchenko, said Tuesday that more than 1,300 A/H1N1 flu cases had been confirmed in the country.
Russia has launched mass production of two A/H1N1 flu vaccines. It planned to start a A/H1N1 flu vaccination program in December, which would involve 10 million people in the first instance.