Introduction. With the national guidelines of the Sustainable Selective Test -Tracking- Isolation program (PRASS in spanish) and the district´s strategy of Detect-Isolation-Report (DAR in spanish) from the Public Health Plan of Collective Interventions (PSPIC in spanish), during 2020 were implemented activities of active search for positive cases of SARS – CoV – 2, in order to identify risk areas and implement mitigation and containment strategies for the COVID – 19 pandemic in Bogotá. The objective of this work is to describe the strategy of active case – finding for COVID – 19 in Bogota city, 2020 – 2021. Materials y methods. Using descriptive statistics, we described the search sessions carried out in the city. Thus, the integrated health services subnets with their home environment public health teams, integrated by professionals and trained technicians, carried out swab sampling in the following clusters: select groups with greater vulnerability or high exposure to the virus given their daily activities, or specific areas of the city with a high rate of virus transmissibility or apparently silent. Samples were sent to the district public health laboratory for processing using the Charité protocol RT-PCR, Berlin. They also carry out communication and education activities for health and notification of cases to the Public Health Surveillance System – SIVIGILA. Results. Between June 2020 and June 2021, were performed 9997 journeys of active search, where 1´000.225 samples were taken along the 20 localities of Bogotá city, with a higher concentration of samples in Ciudad Bolivar (11%), Kennedy (9%), Tunjuelito (7%), Suba (6%), Usme (6%), Puente Aranda (6%) and Bosa (6%). Acumulative positivity ratio of 20% was observed for the observed period, in the three moments with the highest frequency of positive cases for the SARS – CoV – 2 virus in the city, positivity ratios of 14% were reached in the months of July and August 2020, 19% between December 2020 and January 2021 and 39% in the third peak of infections between May and June 2021, finding for the latter period time, days with positivity proportions that exceeded 45%. Conclusion. In the city, epidemiological surveillance actions are continued, such as Field Epidemiological Investigations (IEC in spanish), as well as the increasing of collective interventions in the different environments of daily life, wich are focused on the areas with the higher positivity, developing actions aimed at empowering the community in relation to care and biosecurity guidelines to reduce the COVID - 19 contagion risk.