eng Oriental Scientific Publishing Company Biomedical and Pharmacology Journal 0974-6242 2020-09-25 13 3 1351 1355 10.13005/bpj/2004 34626 article Nicolas Padilla-Raygoza 1 Cuauhtémoc Sandoval-Salazar 2 Luis Antonio Diaz-Becerril 3 Daniel Alberto Díaz-Martínez 4 Efraín Navarro-Olivas 4 Maria de Jesús Gallardo –Luna 4 School of Medicine, University of Celaya, Mexico 38080 Department of Nursing and Obstetrics, Division of Health Sciences and Engineering, Campus Celaya-Salvatierra, University of Guanajuato, Mexico Secretary of Health form Guanajuato State, Mexico 36000 The aim was to describe the number of confirmed cases of COVID-19 in Mexico until April 16, 2020. The study design was an ecological descriptive study. The place and duration of study were registries of confirmed cases for COVID-19 in Mexican population during February and until April 16, 2020, 13:00 PM, from National System of Epidemiological Surveillance/ General Direction of Epidemiology/ Secretary of Health, Mexico. Material and methods: Accord to database of confirmed cases of COVID-19 by Secretary of Health in Mexico, it was collected data on age, gender, it was included 6,297 registries. Results: The first confirmed case in Mexico was February 20, 2020 and the frequency are arising at the end of February and throughout March. The early confirmed cases were imported cases for travel to USA, Italy, Germany, Spain, France and Singapore. No one travelled to China. Now, there are a lot of confirmed cases infected for contact with a case. Conclusion: The frequency of confirmed cases of COVID-19 are higher and the health authorities in Mexico are waiting that the peak of the epidemiological curve is in early May. https://biomedpharmajournal.org/vol13no3/evolution-of-covid-19-infection-in-mexico-until-april-16-2020-a-descriptive-ecological-study/ COVID-19 Infection Population SARS-CoV-2