The rate and associated factors with antibody response in patients with COVID-19 infection

Yıl 2021, , 832 - 837, 01.09.2021

Semiha Çelik Ekinci , Bengü Şaylan

https://doi.org/10.28982/josam.867695

Öz

Background/Aim: It remains unknown in what form and to what extent antibodies to SARS-CoV-2 confer immunity and whether these antibodies from previous infections could ensure protection from reinfection. This study aimed to investigate the rate of antibody positivity among patients who recovered from COVID-19 infection and the factors influencing antibody production among these patients.
Methods: This prospective case control study included 111 males (mean age: 34 years, range: 18-60 years) who recovered from PCR-confirmed COVID-19. The patients underwent antibody testing on the 28th day of recovery. Sixty-seven patients (60.4%) had antibodies against COVID-19 as well as positive IgM and IgG, and 39.6% of patients were negative for Ab production.
Results: The mean ages of the antibody-positive and negative groups were 43 and 29 years, respectively, the age of the positive group was significantly higher than the age of the negative group (P<0.001). The rate of antibody production in symptomatic patients was approximately 4.5 times higher than that in asymptomatic patients. The factors that were associated with antibody production were advanced age (OR=1.1), cough (OR=6.1), fever (OR=4.5), shortness of breath (OR=12.4), myalgia (OR=4.7), increased levels of CRP (OR=32.1), sedimentation rate (OR=17.3), LDH (OR=6.9), D-dimer (OR=10.6), ferritin (OR=29.4), and the presence of lymphopenia (OR=4.2) and thrombocytopenia (OR=7.1).
Conclusion: The finding that a substantial number of patients recovering from COVID-19 did not develop antibody response suggests that these patients are still at risk for reinfection. In addition, patients who have experienced symptomatic disease course, advanced age and developed higher inflammatory response may be better candidates for plasma donation.

Anahtar Kelimeler

Reinfection, SARS-CoV-2, Antibody, Covid-19

Covid-19 Hastalarında Antikor Yanıt Oranı ve Bu Orana Etki Eden Faktörler

Öz

Özet
AMAÇ: SARS-CoV-2 antikorlarının hangi klinik formda ve ne ölçüde bağışıklık yanıtı oluştuğu ve geçirilmiş enfeksiyon ile elde edilen bu antikorların reenfeksiyona karşı tam olarak koruyucu olup olmadığı henüz bilinmemektedir. Çalışmamızda, COVID-19 enfeksiyonu sonrasında iyileşenlerin antikor pozitiflik oranını ve bu hastalarda antikor oluşumuna etki eden faktörleri araştırmayı hedefledik.
YÖNTEMLER ve BULGULAR: Çalışmamıza, daha önce PCR testi ile doğrulanmış, klinik iyileşmenin 28. gününde antikor bakılan, 18-60 yaş arası 111 erkek hasta kabul edildi. 67 hastada antikor pozitifliği saptandı ve bunların tümünde hem IgM ve hem de IgG pozitifti. Çalışmaya alınan hastaların ortalama yaşları 34 yıldı, antikor cevabı verenlerin yaş ortalaması 43 yıl iken, antikor yanıtı oluşturamayanların yaş ortalaması ise 29 yıl olarak hesaplandı. Semptomatik hastalarda antikor oluşturma oranı, asemptomatik hastalara göre yaklaşık 4,5 kat fazlaydı.
SONUÇ: İleri yaş, öksürük, ateş, nefes darlığı ve miyalji gibi semptomların varlığı, CRP, sedim, LDH, D-dimer ve ferritin değerlerinde yükseklik, lenfopeni ve trombositopeni varlığı, antikor yanıtına etki eden faktörlerdir. Hastalığı geçirenlerin önemli bir kısmında antikor yanıtı oluşmaması, reenfeksiyon riski olduğunu gösterir. Ayrıca hastalığı semptomatik olarak geçiren ve kan değerlerinde inflamatuvar parametreleri daha yüksek olan hastalara, plazma bağışına teşvik aşamasında öncelik verilebilir.

Anahtar Kelimeler

Reenfeksiyon, SARS-CoV-2, Antikor, Covid-19

Kaynakça

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