Effect of vaccine on prognosis and mortality in COVID-19

Aim: The aim of our study is to reveal the factors affecting clinical course COVID-19 infection and mortality in immune non-immune patients aged 65 over.Material Method: was carried out by scanning files a total 1,642 cases over. 1337 included were divided into two groups as follows: who vaccinated with 2nd dose CoronaVac but became infected after 14-day period which immunization should develop (Group I) others unvaccinated, or single vaccination receiving 14 days II). compared each other about mortality.Results: length intensive care unit (ICU) stay, hospital stay significantly longer Group II than I (p<0.05). need for mechanical ventilation (MV) MV also higher All enrolled had lung involvement. percentage Computed tomography (CT) involvement over 50% statistically significant severe critically high vs. (p<0.05).Conclusion: When we unvaccinated years age, found that hospitalization ICU increased mortality, vaccine reduced MV.