Rosenberg, Felix J., et al. “Urban COVID-19 Endemism in Petrópolis: Detection of an Endemic Focus by Spatial Analysis”. Revista Peruana De Medicina Experimental Y Salud Pública, vol. 40, no. 2, June 2023, pp. 213-9, https://doi.org/10.17843/rpmesp.2023.402.11341.