COVID-19 clusters in Colombia: epidemiological characteristics from March to December 2020
DOI:
https://doi.org/10.33610/28059611.151Keywords:
pandemics, coronavirus, SARS-CoV-2, COVID-19, public health surveillance, cluster analysisAbstract
Introduction. Surveillance of COVID-19 clusters is a mechanism for understanding the types of environments that facilitate its transmission. The objective was to characterize the clusters for this disease in Colombia from March December 2020.
Methodology.Cross-sectional, analytical study. Cases defined as COVID-19 clusters, classified in nine groups, were taken as reference. The statistical analysis was conducted in Epi-Info 7.2 and R 4.0.3. Absolute and relative frequencies were calculated; measures of central tendency, positivity percentage, OR calculations and confidence intervals; the cases corresponded to those confirmed for COVID-19 (hospitalized or deceased) and the comparison group corresponded to the group with the lowest percentage of positivity (community) to evaluate hospitalization. For mortality, the group with the lowest case fatality rate (military forces) was used.
Results. We characterized 2 410 clusters with 55 598 cases: 1 114 in companies (46.2 %, 12 569 cases). A total of 163 450 samples were taken for PCR with 34.0 % positivity. Higher risk of hospitalization was identified in indigenous clusters OR=7.7 (IC95% [6.3-9.4]), marketplaces OR=4.5 (IC95% [3.5-4.9]) and protection centers OR=3.9 (IC95% [3.3-4.5]). Higher probability of death in protection centers, marketplaces and community centers.
Conclusion. Businesses, protection centers, and the military and prison population are environments that reported the highest number of clusters.
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