Journals / Flora İnfeksiyon Hastalıkları ve Klinik Mikrobiyoloji Dergisi / 2022 / Cilt: 27 - Sayı: 1

SARS-CoV-2 Seropositivity Level in a Cohort of Turkish Health Care Professionals After COVID-19 Vaccine (CoronaVac) and Assessment of Factors Affecting the Antibody Response

COVID-19 Aşısı (CoronaVac) Sonrası Türk Sağlık Çalışanlarından Oluşan BirKohortta SARS-CoV-2 Seropozitiflik Düzeyi ve Antikor Yanıtını EtkileyenFaktörlerin Değerlendirilmesi

Pages
142–150
Publication Date
2022-10-17
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

It was determined that the factors affecting the development of antibodies were gender, age, and the state of having COVID-19.

📌 3 Key Takeaways

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Objective & Hypothesis:Introduction: Although Phase III trial results of many COVID-19 vaccines were reported, the literature regarding community results is inadequate for CoronaVac.
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Key Findings & Data:Materials and Methods: Anti-SARS-CoV-2 (anti-spike) antibodies were measured by ELISA in blood samples taken at least 28 days (28-32) after the second CoronaVac among 264 HCWs vaccinated twice with an interval of 28 days.
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Conclusion & Impact:It was determined that the factors affecting the development of antibodies were gender, age, and the state of having COVID-19.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Introduction: Although Phase III trial results of many COVID-19 vaccines were reported, the literature regarding community results is inadequate for CoronaVac. This study aims to evaluate the experience gained during the vaccination process among health care workers (HCWs), the measured antibody responses and the factors affecting the response. These findings will contribute to the literature in this field. Materials and Methods: Anti-SARS-CoV-2 (anti-spike) antibodies were measured by ELISA in blood samples taken at least 28 days (28-32) after the second CoronaVac among 264 HCWs vaccinated twice with an interval of 28 days. Information from individuals was collected with an online participation form. Results: A total of 264 HCWs (166 females (63%), 98 males (37%) whose ages werebetween 23-69 (mean 44.22 ± 11.58) were included independent of their COVID-19 history in the study. After vaccination, 22HCWs (8.3%) were unresponsive, 25 (9.5%) HCWs among responders had a weak antibody response, and 217 (82.2%) had afull antibody response according to the test kit manufacturer. For HCWs with and without a COVID-19 infection history, the full antibody response rates were 91.7% and 77.5%, respectively. The antibody titres tended to be lower in HCWs with no prior COVID-19 infection (p= 0.046). In our study, antibody response was found to be significantly lower in males (p= 0.043).There was a significant decrease in antibody response with advancing age (p= 0.002 Chi-square test, p= 0.030 Spearman coefficient), and the difference was highly significant (p= 0.017) above the age of 60. Conclusion: In this study, it was determined that 91.7% of healthcare workers (weak in 9.5% and full in 82.2%) developed anti-spike antibodies with CoronaVac. It was determined that the factors affecting the development of antibodies were gender, age, and the state of having COVID-19.

Özet

Giriş: Birçok COVID-19 aşısının Faz III deneme sonuçları bildirilmiş olsa da CoronaVac için toplumdan gelen sonuçlarına ilişkin literatür yetersizdir. Bu çalışmada, sağlık çalışanları arasında aşılama sürecinde kazanılan deneyimleri, ölçülen antikor yanıtlarını ve yanıtı etkileyen faktörleri değerlendirmek amaçlanmaktadır. Bulgular bu alandaki literature katkı sağlayacaktır. Materyal ve Metod: Yirmi sekiz gün ara ile iki kez aşılanan 264 sağlık çalışanından, ikinci CoronaVac uygulamasından en az 28 gün sonra (28-32) alınan kan örneklerinden ELISA ile anti-SARS-CoV-2 (anti-spike) antikorları ölçüldü. Kişilerden bilgiler online katılım formu ile toplanmıştır. Bulgular: Çalışmaya COVID-19 geçmişinden bağımsız olarak yaşları 23-69 (ortalama 44.22 ± 11.58) arasında olan toplam 264 sağlık çalışanı [166 kadın (%63), 98 erkek (%37)] dahil edildi. Aşılamadan sonra kit üreticisi firma tarafından önerilen antikor yanıtı düzeylerine göre 22 sağlık çalışanı (%8.3) yanıtsız, yanıt verenler arasında 25 (%9.5) sağlık çalışanı zayıf antikor yanıtına ve 217’si (%82.2) tam antikor yanıtına sahipti. COVID-19 infeksiyon geçmişi olan ve olmayan sağlık çalışanları için tam antikor yanıt oranları sırasıyla %91.7 ve %77.5’ti. Antikor titreleri, önceden COVID-19 infeksiyonu olmayan sağlık çalışanları için daha düşük olma eğilimindeydi (p= 0.046). Çalışmamızda antikor yanıtı erkeklerde anlamlı olarak daha düşük bulundu (p= 0.043). İlerleyen yaşla birlikte antikor yanıtında anlamlı bir azalma oldu (p= 0.002 ki-kare test, p= 0.030 Spearman korelasyon katsayısı) ve fark 60 yaşın üzerinde oldukça anlamlıydı (p= 0.017). Sonuç: Bu çalışmada, inaktif bir aşı olan CoronaVac ile sağlık çalışanlarının %91.7’sinde (%9.5’te zayıf ve %82.2’de tam) anti-spike antikorların geliştiği tespitedildi. Antikor gelişimini etkileyen faktörlerin cinsiyet, yaş ve COVID-19 geçirme durumu olduğu belirlendi.

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Cite This Article

TOSUN, S., ÖZDEMİR, H. Ö., COŞKUNER, S. A., DEMİR, S. (2022). SARS-CoV-2 Seropositivity Level in a Cohort of Turkish Health Care Professionals After COVID-19 Vaccine (CoronaVac) and Assessment of Factors Affecting the Antibody Response. Flora İnfeksiyon Hastalıkları ve Klinik Mikrobiyoloji Dergisi, Cilt: 27 - Sayı: 1, 142–150. https://ajindex.com/articles/517035

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