2.6. Data extraction process
The authors (F.R.T. and C.Q.N.) independently extracted the data of
interest in a previously prepared Microsoft Excel template. Any
disagreement was resolved by the authors (R.P.V. and N.L.C.G.). The
extracted data included the most important characteristics of the
studies such as the name of the first author, year of publication, sex,
age, background/comorbidities, vaccine type, number of doses, time after
COVID-19 vaccination, clinical manifestations, physical exam (signs)/
vital functions, laboratory, image tests, pathology (histology), final
diagnostic, treatment (medical or surgical) and development -recovery
time (medical or surgical).