Background: Since the time of global SARS-CoV-2 spread across the earth in February 2020, most of countries faced the problem of massive stress of their healthcare systems. In many cases, the structural stress was a result of incorrect allocation of medical care resources. In turn, this misallocation resulted from fear and apprehensions that superseded thorough calculations. A key role in exacerbating the healthcare sector overburdening was played by misleading information on the virus and disease caused by it. In the current paper, we study the situation in Russian healthcare system and advance recommendations how to avoid further crises. Materials and methods: (a) Surveying the medical personnel (231 doctors, 317 nurses and 355 ambulance medical workers of lower levels) in five hospitals and six ambulance centres in Moscow. (b) Content analysis of 3164 accounts in Russian segment of social networks (VKontakte, Facebook, Instagram, Twitter, Odnoklassniki); official and unofficial media (TV, informational webpages). Results: We revealed positive-feedback loop that threatened the sustainability of Russian care sector. The main knot was occupied by incorrect/exaggerated media coverage of COVID-19. General public scared by misinformation in media and social networks, started to panic. This negative social background undermined the productivity of a significant part of medical workers who were afraid of COVID-19 patients. Conclusions: The most serious problems of Russian healthcare sector related to COVID-19 pandemic, were informational problems. The exaggerated information on COVID-19 had big negative influence upon Russian society and healthcare system, despite SARS-CoV-2 relatively low epidemiological hazard. © 2020 The Authors. European Journal of Clinical Investigation published by John Wiley & Sons Ltd on behalf of Stichting European Society for Clinical Investigation Journal Foundation