Durability of S-RBD IgG Antibody Levels after Sinovac Vaccination in Healthcare Workers

Autor: Jusak Nugraha, Cynthia Ayu Permatasari, Munawaroh Fitriah
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Folia Medica Indonesiana, Vol 58, Iss 3, Pp 234-241 (2022)
Druh dokumentu: article
ISSN: 2355-8393
2599-056X
DOI: 10.20473/fmi.v58i3.35873
Popis: Highlights: • The effectiveness of vaccination through the kinetics of the antibody response to the SARS-COV-2 vaccine administration by examining IgG S-RBD levels was aimed. • Two doses of the Sinovac vaccine formed antibodies in healthy individuals in the first 3rd month after vaccination. • An S-RBD IgG antibody in the 6th-month post-vaccination was significantly different between groups without a history and groups with a history of infection with COVID-19. Abstract: Since it was declared a pandemic in early 2020, Coronavirus Disease 2019 (Covid-19) has caused high morbidity and mortality in the world. In view of the urgency of the situation, vaccination efforts are needed to break the chain of disease transmission. Various types of vaccines have been successfully developed and obtained approval for emergency use. However, the effectiveness of these vaccines, both in the short and long term, has not been fully known. This study aimed to examine the effectiveness of vaccination through the kinetics of the antibody response to the administration of the SARS-COV-2 vaccine by examining IgG S-RBD levels. This study was an observational analytic study with a prospective cohort approach carried out between January and November 2021 at Dr. Soetomo General Academic Hospital, Surabaya, Indonesia. Fifty health workers who received Sinovac vaccination in as many as 2 doses underwent venous blood taking and measurement of quantitative S-RBD antibody level. Then, quantitative S-RBD IgG antibody levels were measured and recorded in each subject. The mean S-RBD IgG antibody was found to have fluctuation. The titer was found to significantly increase on day 14 and dropped significantly in month 3 (p
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