Identification of the Main Adverse Effects of Covid-19 Vaccination Among Workers in a Construction Company in the City of Guayaquil

The COVID-19 disease is caused by SARS-CoV-2, which has caused an unprecedented health, economic and social crisis, globally and regionally. The objective is to identify the main adverse effects of the Covid-19 vaccination in the workers of a construction company in the city of Guayaquil-Ecuador, through Google drive forms where a questionnaire was applied that was answered individually by a sample of 215 workers of a construction company in Guayaquil. The results indicated that the symptom that predominated in this dose or booster dose was the third pain in the injection area with 14.4% and fatigue with 12.6%. 61.4% do not present any symptoms. During this year and a half since vaccination for Covid-19 began, the vaccines used to reduce serious illness have proven to be safe and effective regardless of the name of the vaccine.