The Ukrainian intelligence Unit has declared that 300 people were killed by H1N1 flu at Donetsk and Luhansk regions where pro-Russian separatists declared independence as "people's republics" after the referendums, which were not recognized by Kiev or the West.
The statement, issued on the website of the Defense Ministry, criticized what it called the 'so-called administrators' for not protecting the residents from diseases by providing efficient health services.
Ukrainian officialy previously introduced a number of urgent measures to head off an outbreak of swine flu in the country, such as temporarily closing schools and banning some public gatherings, particularly in Kiev.
More than 200 people died from the virus in Ukraine during a global outbreak in 2009.
Swine influenza, also called pig influenza, swine flu, hog flu and pig flu, is an infection caused by any one of several types of swine influenza viruses.
Swine influenza virus, or swine-origin influenza virus, is any strain of the influenza family of viruses endemic in pigs.
Symptoms of swine flu in humans appear to be similar to those produced by standard, seasonal flu - fever, cough, sore throat, body aches and chills.
However, about 98 percent of people with these symptoms recover without the need for any hospital treatment.