Daily identified cases of infection in the USA, Italy, Spain, Sweden (persons): a) USA, N0=50; b) Italy, N0=10; c) Spain, N0=12; d) Sweden, N0=1. Source: Compiled by the authors on the basis of (World Health Organization 2020).

  Part of: Burmakina VV, Pomazkin DV, Prokhorov ID (2020) Methods for constructing an assessment of the development of the coronavirus pandemic. Population and Economics 4(2): 96-102. https://doi.org/10.3897/popecon.4.e53686