A randomized controlled trial study of immunogenicity and safety of an inactivated SARS-CoV-2 vaccine in different immunization schedules

Objective: To compare the immunogenicity and safety of an inactivated SARS-CoV-2 vaccine used for the vaccination in public security officers with different immunization schedules. Methods: From January to February, 2021, 405 public security officers in Taiyuan were randomly divided into 3 groups. Two doses of SARS-CoV-2 inactivated vaccine were injected according to the immunization schedule of 0-14 days, 0-21 days or 0-28 days, respectively. The nucleic acid of SARS-CoV-2 was detected by reverse transcription polymerase chain reaction. The neutralizing antibodies to SARS-CoV-2 were tested by microdose cytopathogenic efficiency assay of live virus. The GMT, seroconversion rate of SARS-CoV-2 neutralizing antibody and safety of the vaccine were analyzed for the 3 groups. Results: The seroconversion rate of SARS-CoV-2 neutralizing antibody was 100% in all the 3 groups. The SARS-CoV-2 neutralizing antibody level of 0-21 day group [166.70 (95%CI: 148.30-185.10)] was similar to that of 0-28 day group [179.50 (95%CI: 156.50-202.60)] (P>0.05), significantly higher than that of 0-14 day group [86.08 (95%CI: 72.36-99.80)] (P<0.001). The incidence rates of adverse reaction in the 3 groups were 1.48% (2/135), 0.74% (1/136) and 1.49% (2/134) respectively (P=0.750), all the adverse reactions were mild. Conclusions: The vaccination of inactivated SARS-CoV-2 vaccine with different immunization schedules in public security officers showed good safety and high seroconversion rate, and the GMTs of SARS-CoV-2 neutralizing antibody in 0-21 day group and 0-28 day group were higher than that in 0-14 day group.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:42

Enthalten in:

Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi - 42(2021), 12 vom: 10. Dez., Seite 2077-2081

Sprache:

Chinesisch

Beteiligte Personen:

Chen, J [VerfasserIn]
Li, X Q [VerfasserIn]
Lu, X X [VerfasserIn]
Xing, R Q [VerfasserIn]
Li, H [VerfasserIn]
Zhang, X H [VerfasserIn]
Wei, Z Y [VerfasserIn]
Mu, S C [VerfasserIn]
Feng, L Z [VerfasserIn]
Wang, S P [VerfasserIn]

Links:

Volltext

Themen:

Antibodies, Neutralizing
Antibodies, Viral
COVID-19 Vaccines
Journal Article
Randomized Controlled Trial
SARS-CoV-2 inactivated vaccines
Vaccines, Inactivated

Anmerkungen:

Date Completed 28.12.2021

Date Revised 28.12.2021

published: Print

Citation Status MEDLINE

doi:

10.3760/cma.j.cn112338-20210807-00617

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM334908590