Vujnovic agreed with the assessments of the Russian Health Ministry that the spread of the coronavirus in the country will decline in May.
"Yes, I agree, but all depends on how people behave," Vujnovic said during The Next 20 Years online forum.
Earlier this week, the health ministry's chief epidemiologist Nikolay Briko opined in an interview with Russian media that the spread of COVID-19 in Russia would start diminishing sometime between the end of April and the beginning of May in line with general epidemiological patterns typical of acute severe respiratory infections, including influenza.
On Wednesday, Russian President Vladimir Putin announced new measures to help Russia deal with the coronavirus pandemic, including temporary relief for businesses and a paid holiday in the country from 28 March to 5 April.
Before that, Moscow Mayor Sergei Sobyanin had ordered Muscovites aged over 65 to stay home from 26 March onwards. He later announced that the capital would close restaurants, non-essential shops, and parks starting Saturday.
The total tally of COVID-19 patients in Russia stands at 1,264 in 62 regions, with four fatal cases.