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Abstrak :
COVID-19 merupakan penyakit yang disebabkan oleh virus SARS-CoV-2 yang mengakibatkan pandemi global. Jakarta adalah salah satu kota di Indonesia dengan angka kasus dan kematian tertinggi akibat COVID-19. Salah satu cara paling efektif untuk mengurangi keparahan dan resiko penularan COVID-19 adalah dengan vaksinasi. Vaksin dapat merangsang respons imunitas humoral tubuh yang menghasilkan antibodi netralisasi. Selain vaksin, antibodi netralisasi dapat diinduksi secara natural oleh imunitas tubuh. Hybrid immunity merupakan gabungan antara antibodi netralisasi yang diinduksi secara natural dan yang diinduksi oleh vaksin. SARS-CoV-2 terus bermutasi memunculkan berbagai varian yang menyebabkan peningkatan jumlah kasus dan munculnya gelombang COVID-19 baru di Indonesia, yaitu gelombang Delta pada Juni 2021 dan gelombang Omicron pada Januari 2022. Penelitian ini bertujuan untuk mengevaluasi perubahan antibodi netralisasi 3 bulan setelah vaksinasi dosis lengkap dari beberapa jenis vaksin, yaitu vaksin virus inaktivasi (CoronaVac), vaksin viral vektor (ChAdOx1 nCoV-19), dan vaksin mRNA (BNT162b2) serta pengaruh riwayat infeksi SARS-CoV-2 pada penerima vaksin terhadap berbagai varian SARS-CoV-2 (Wuhan, Delta, Omicron B.1.1.529 dan BA.2). Penelitian dilakukan dengan menggunakan uji Surrogate Virus Neutralization Test (sVNT) yang memiliki prinsip kerja seperti enzyme-linked immunosorbent assay (ELISA) dan meniru interaksi antara receptor binding domain (RBD) dan angiotensin-converting enzyme 2 (ACE2) dalam pelat ELISA dengan RBD dan ACE2 yang telah mengalami pemurnian dengan sampel serum partisipan populasi umum (n = 76). Hasil penelitian menunjukkan adanya perbedaan signifikan antara antibodi netralisasi sebelum dan 3 bulan setelah vaksinasi dosis lengkap, tetapi tidak terdapat perbedaan signifikan pada antibodi netralisasi yang dihasilkan dari masing-masing jenis vaksin. Hal tersebut kemungkinan disebabkan oleh waktu pengambilan sampel setelah terjadi gelombang Omicron COVID-19 sehingga terjadi hybrid immunity yang menyebabkan tingginya kadar antibodi netralisasi yang merata pada setiap jenis vaksin. Partisipan dengan riwayat infeksi SARS-CoV-2 memiliki kadar antibodi netralisasi yang lebih tinggi. Terdapat perbedaan antibodi netralisasi yang signifikan terhadap berbagai varian SARS-CoV-2 dengan penurunan kadar antibodi netralisasi yang signifikan terhadap varian Omicron B.1.1.529 dan BA.2. Kesimpulan dari penelitian ini adalah vaksinasi dosis lengkap berhasil meningkatkan kadar antibodi netralisasi hingga 3 bulan pascavaksinasi yang dipengaruhi oleh riwayat infeksi SARS-CoV-2. ......COVID-19 is a disease caused by the SARS-CoV-2 virus which has resulted in a global pandemic. Jakarta is one of the cities in Indonesia with the highest number of COVID-19 cases and deaths. One of the most effective ways to reduce the severity and transmission risk of COVID-19 is by getting vaccinated. Vaccines can stimulate the body's humoral immune response to produce neutralizing antibodies. Apart from vaccines, neutralizing antibodies can be induced naturally by the body's immunity. Hybrid immunity is a combination of naturally induced neutralizing antibodies and those induced by vaccines. The continuously mutating SARS-CoV-2 has led to the emergence of various variants which have resulted in an increase in the number of cases and the emergence of new COVID-19 waves in Indonesia, namely the Delta variant which appeared in June 2021 and the Omicron variant in January 2022. This study aims to evaluate changes in neutralizing antibodies 3 months after complete doses of several types of vaccines, namely inactivated virus vaccine (CoronaVac), viral vector vaccine (ChAdOx1 nCoV-19), and mRNA vaccine (BNT162b2) and the effect of a history of SARS-CoV-2 infection in vaccine recipients against various variants SARS-CoV-2 (Wuhan, Delta, Omicron B.1.1.529 and BA.2). The study was conducted using the Surrogate Virus Neutralization Test (sVNT) test which has a working principle like the enzyme-linked immunosorbent assay (ELISA) and mimics the interaction between the receptor binding domain (RBD) and angiotensin-converting enzyme 2 (ACE2) in ELISA plates using RBD and ACE2 that had undergone purification with sera samples of general population participants (n = 76). The results showed that there were significant differences between the neutralizing antibodies before and 3 months after the full dose of vaccination, but there were no significant differences in the neutralizing antibodies produced from each type of vaccine. This was probably caused by the sampling time after the Omicron COVID-19 wave occurred, resulting in hybrid immunity which resulted in high levels of neutralizing antibodies that were evenly distributed in each type of vaccine. Participants with a history of SARS-CoV-2 infection had higher levels of neutralizing antibodies. There were significant differences in neutralizing antibodies against various variants of SARS-CoV-2 with a significant decrease in levels of neutralizing antibodies against Omicron B.1.1.529 and BA.2 variants. The conclusion of this study is that full dose vaccination has succeeded in increasing neutralizing antibody levels for up to 3 months after vaccination which are affected by a history of SARS-CoV-2 infection.

Abstrak :
Pandemi COVID-19 telah menimbulkan tantangan global dalam menghadapi penyebaran virus SARS-CoV-2. Vaksinasi menjadi strategi efektif dalam mengurangi penyebaran virus dan dampak COVID-19 pada kesehatan masyarakat. Platform vaksin yang banyak diberikan di Indonesia antara lain platform virus utuh dan vektor virus. Penelitian ini bertujuan menganalisis imunitas humoral pasca vaksinasi COVID-19 platform virus utuh dan vektor virus pada orang dewasa. Desain penelitian ini adalah longitudinal dengan pengambilan sampel secara berkala sebanyak 6 kali sebelum dan setelah vaksinasi. Penelitian dilakukan pada tahun 2021 sampai 2023 di Kota Bogor dan Kabupaten Sleman. Jumlah subjek yang terlibat sebanyak 150 orang pada setiap kelompok. Pengumpulan data dilakukan melalui wawancara dan pengambilan sampel serum. Serum diperiksa untuk binding antibody menggunakan CMIA, antibodi netralisasi menggunakan SvNT, subkelas IgG menggunakan ELISA, dan mediator imunitas seluler menggunakan multipleks ELISA. Dari hasil pemeriksaan laboratorium pada sampel TP1 didapatkan sebanyak 42% subjek vaksin virus utuh dan 81% subjek vaksin vektor virus positif antibodi SARS-CoV-2. Di antara subjek yang positif mempunyai riwayat gejala sesak napas (100%), demam (89%) dan pilek (82%). Subjek vaksin vektor virus mempunyai tren respons antibodi lebih tinggi dibanding virus utuh. Proporsi subjek positif pada pengukuran antibodi netralisasi selalu lebih tinggi dibanding binding antibody. Berdasarkan imunosenescence, secara umum tidak berbeda bermakna di antara kelompok usia tersebut. Faktor yang secara signifikan memengaruhi respons imun dalam adalah platform vaksin. Respons antibodi tidak berbeda bermakna pada subjek yang mendapatkan vaksin 2 dan 3 dosis, baik pada hasil pengukuran TP1 positif maupun negatif. Pemberian dosis 3 heterolog menimbulkan respons antibodi yang lebih tinggi dibandingkan dengan homolog. Analisis statistik pada kedua kelompok penerima vaksin menunjukkan tidak berbeda bermakna pada semua subkelas IgG. Kadar IFN gamma, IL-2, IL-6, IL-10 dan TNF alpha pada virus utuh lebih rendah dibandingkan vektor virus Hasil penelitian menunjukkan bahwa kedua platform vaksin mampu menginduksi respons antibodi yang signifikan. Namun, terdapat perbedaan dalam pola dan durasi respons imun antara kedua jenis vaksin. ......The COVID-19 pandemic has become a global challenge with the spread of SARS-CoV-2. Vaccination is an effective strategy to reduce the spread of the virus and the impact of COVID-19 on public health. The research aims to analyse humoral immunity following vaccination with COVID-19 viral platforms and viral vectors in adults. The study design is longitudinal, with samples taken periodically up to 6 times before and after vaccination. The study will be conducted between 2021 and 2023 in Bogor City and Sleman District. The number of subjects involved is 150 people in each group. Data will be collected through interviews and serum sampling. Serum was tested for antibody binding using CMIA, antibody neutralisation using SvNT, subclass IgG using ELISA, and cellular immunity mediators using ELISA multiplex. Laboratory testing of the TP1 sample showed that 42% of the whole inactivated vaccine subjects and 81% of the viral vector subjects were positive for SARS-CoV-2 antibodies. Those who were positive had a history of shortness of breath (100%), fever (89%) and colds (82%). The proportion of positive subjects in the neutralised antibody measurement is always higher than the antibody binding. Based on immunosenescence, there is generally no difference in significance between these age groups. The factor that significantly affects the immune response within the vaccine is the vaccine platform. The antibody response was not significantly different in subjects who received 2 and 3 doses of the vaccine, both in positive and negative TP1 measurements. The administration of 3 heterologous doses results in a higher antibody response compared to homologous doses. Statistical analysis in both groups showed no significant difference in all IgG subclasses. IFN gamma, IL-2, IL-6, IL-10 and TNF-alpha levels were lower in the whole inactivated vaccine than in in the viral vector. However, there are differences in the pattern and duration of immune responses between the two vaccines.