The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is responsible for the
coronavirus disease (COVID-19), a highly contagious infectious disease that has caused many deaths
worldwide. Despite global efforts, it continues to cause great losses, and leaving multiple unknowns
that we must resolve in order to face the pandemic more effectively. One of the questions that has
arisen recently is what happens, after recovering from COVID-19. For this reason, the objective of
this study is to identify the risk of presenting persistent symptoms in recovered from COVID-19.
This case-control study was conducted in one state of Mexico. Initially the data were obtained
from the participants, through a questionnaire about symptoms that they had at the moment of the
interview. Initially were captured the collected data, to make a dataset. After the pre-processed using
the R project tool to eliminate outliers or missing data. Obtained finally a total of 219 participants,
141 recovered and 78 controls. It was used confidence level of 90% and a margin of error of 7%.
From results it was obtained that all symptoms have an associated risk in those recovered. The relative
risk of the selected symptoms in the recovered patients goes from 3 to 22 times, being infinite for the
case of dyspnea, due to the fact that there is no control that presents this symptom at the moment of
the interview, followed by the nausea and the anosmia with a RR of 8.5. Therefore, public health
strategies must be rethought, to treat or rehabilitate, avoiding chronic problems in patients recovered
from COVID-19