{"title":"COVID-19 Vaccine Effectiveness on the Severity of Disease: A\u0000Case-control Study in Southeastern Iran","authors":"Mohsen Mohammadi, Abdolali Golpayegani, Fatemeh Doost Mohammadi, Fatemeh Majidpour, Mostafa Dianati-Nasab, Abdolreza Bahrami, Elahe Hesari, Maryam Dargahpour, Parisa Jalali","doi":"10.2174/0126667975312941240718111040","DOIUrl":"https://doi.org/10.2174/0126667975312941240718111040","url":null,"abstract":"\u0000\u0000Considering the importance of the effectiveness of vaccination in terms of\u0000reducing the severity of COVID-19 and mortality, knowledge of the effect of the vaccine on the severity of COVID-19 in communities is essential. Therefore, the purpose of this study was to evaluate\u0000the effect of the COVID-19 vaccine on the severity of COVID-19 in southeastern Iran (Bam region).\u0000\u0000\u0000\u0000A case-control study of a total of 2,082 adults aged >18 years was conducted to evaluate\u0000the association between hospitalization due to COVID-19 and previous vaccination with existing\u0000vaccines (including Sinopharm, AstraZeneca, and CovIran Barkat) in the country. Multinomial logistic regression was used, and relative risk (RR) and 95% confidence intervals (CIs) were\u0000calculated\u0000\u0000\u0000\u0000After controlling for potential confounders, multinomial logistic regression revealed that\u0000COVID-19 vaccination reduced the likelihood of hospitalization for males and females in temporary\u0000wards (RRmen=0.22 vs. RRwomen=0.34), general wards (RRmen=0.25 vs RRwomen=0.31), and\u0000intensive care units (RRmen=0.47 vs RRwomen=0.77) (p < 0.001). The relative risk of hospitalization in all wards decreased for men and women who received Sinopharm or AstraZeneca and for\u0000women who received the Barkat vaccine, but only a significant difference was detected in the reduction in patients who received the Sinopharm vaccine (p < 0.001).\u0000\u0000\u0000\u0000The results showed that vaccination is related to reducing the severity of the disease in\u0000the hospital. Therefore, efforts to increase the vaccinated population can reduce the severity of\u0000COVID-19 and might reduce the need for intensive care in hospitals.\u0000","PeriodicalId":10815,"journal":{"name":"Coronaviruses","volume":"82 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141817316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}