Within these cities, it is the strata of old medina, economic and social habitat in addition to the stratum of shantytowns that present the highest risk of contamination, whether in terms of population density or overcrowding of housings, said the HCP in a note entitled "Geo-demographic approach to the major risks of exposure to coronavirus transmission".

Indeed, according to the health statistics of 24 May, 86% of the 7,532 people infected with the coronavirus in Morocco come from the five densest regions of the Kingdom, i.e. nearly nine out of ten cases. These are the regions of Casablanca-Settat (32.6%), Marrakech-Safi (17.6%), Tangier-Tetouan-Al Hoceïma (13.8%), Fez-Meknes (13.2%) and Rabat-Salé-Kénitra (9.2%).

 These regions also have the highest concentrations of their working populations employed in the industrial sector (over 12%), noted the HCP, adding that these activities are mainly found in urban areas that are also characterized by high population densities.