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Immunogenicity and Safety of Booster Immunization of ZF2001 After Inoculation With Two Doses of CoronaVac

COVID-19 Clinical Trial

Official title:
Study on the Immunogenicity and Safety of Booster Immunization of Recombinant Novel Coronavirus Vaccine (CHO Cells) After Inoculation With Two Doses of Inactivated Vaccine (CoronaVac) in People Over 18 Years Old

Clinical Trial Summary

Study objectives: To evaluate the immunogenicity and immunity persistence and safety of recombinant novel coronavirus vaccine (CHO cells) after booster immunization in populations vaccinated with two doses of marketed novel coronavirus inactivated vaccine (CoronaVac). Study method: For the subjects who have been vaccinated with two doses (the interval between two doses ≥ 3 weeks) of the novel coronavirus inactivated vaccine (CoronaVac) for 3 to 9 months, 1 dose of the recombinant novel coronavirus vaccine (CHO cells) was administered. Blood samples were collected before booster immunization, 14 days, 30 days and 180 days after booster immunization for neutralizing antibody detection. All AEs were collected within 1 month after the booster immunization. All SAEs were collected within 6 months after the booster immunization.

Clinical Trial Description

This trial plans to enroll 480 subjects, who will be divided into 3 groups according to the interval between booster immunization and basic immunization: group A (3-4 months), group B (5-6 months), group C (7-9 months) each with 160 subjects (including 120 subjects aged 18-59 years and 40 subjects aged 60 years and above). The recombinant novel coronavirus vaccine (CHO cells) was thoroughly mixed and injected intramuscularly at the deltoid muscle of the upper arm according to the instructions. Blood samples were collected before booster immunization, 14 days, 30 days and 180 days after booster immunization for neutralizing antibody detection. All AEs were collected within 1 month after the booster immunization. Solicited AEs (the following events occurring within 7 days of vaccination) : Adverse events at the inoculation site (local) : pain, pruritus, redness, swelling, rash, induration; Non-inoculated site (systemic) adverse events: fever, headache, fatigue, diarrhea, nausea, vomiting, muscle pain (non-inoculated site), acute allergic reactions, cough. All SAEs were collected within 6 months after the booster immunization. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT05205096
Study type Interventional
Source Anhui Zhifei Longcom Biologic Pharmacy Co., Ltd.
Contact
Status Active, not recruiting
Phase Phase 1/Phase 2
Start date October 21, 2021
Completion date June 2022
View Details
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