University of Guilan Caspian Journal of Environmental Sciences 1735-3033 18 2 2020 04 01 Investigation of spread of novel coronavirus (COVID-19) pandemic in MOROCCO & estimated confinement duration to overcome the danger phase 149 156 4070 10.22124/cjes.2020.4070 EN H. Bendaif Laboratory of Organic Chemistry, Macromolecular and Natural Products (LCOMPNURAC25), Faculty of Sciences, University of Mohammed First, Oujda, Morocco B. Hammouti Laboratory of Applied Analytical Chemistry, Materials and Environment (LCA2ME), Faculty of Sciences, University of Mohammed First, Oujda, Morocco I. Stiane Department of Mathematics, Faculty of Sciences, University of Mohammed First, Oujda, Morocco Y. Bendaif Department of Mathematics, Faculty of Sciences, University of Mohammed First, Oujda, Morocco M.A. El Ouadi Engineer from the National School of Mines of Rabat-MOROCCO Y. El Ouadi Laboratory of Applied Analytical Chemistry, Materials and Environment (LCA2ME), Faculty of Sciences, University of Mohammed First, Oujda, Morocco Journal Article 2020 06 05 Purpose: The objective of this paper is to make an investigation of spread of novel coronavirus (COVID-19) in MOROCCO and to estimate the duration of confinement for the fight against coronavirus disease 2019 (COVID -19). Methods: Data available on the sites provided by the Moroccan Ministry of Health, nonlinear regression, Gaussian function, residual sum of squares and regression curve. Results: Moroccan citizens must stay at home as much as possible until June 12, 2020. Conclusion: Given the non-existence of a vaccine or an effective treatment against the coronavirus (COVID-19), our research team believes that confinement remains the best solution to limit the spread of this pandemic. https://cjes.guilan.ac.ir/article_4070_a82ebe0e64e0f036b7e2e1f3c67e12f3.pdf