> Trialight public data. Index of pages: https://trialight.com/llms.txt > Web page: https://trialight.com/data/trial/immunogenicity-and-safety-of-booster-immunization-of-zf2001-a85ed9bb-634e-4495-95c0-1529c7bda96f > Record changed: 2026-10-13 # Immunogenicity and Safety of Booster Immunization of ZF2001 After Inoculation With Two Doses of BBIBP-CorV NCT05205083 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) Phase Phase 1/Phase 2 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) Recruitment status Unknown Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) Participants 480 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) Lead sponsor Anhui Zhifei Longcom Biologic Pharmacy Co., Ltd. Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) Start date 2021-11-10 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) Number of sites 1 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) ## Title and summary **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 (BBIBP-CorV). 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 (BBIBP-CorV) 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. Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **Short title** Immunogenicity and Safety of Booster Immunization of ZF2001 After Inoculation With Two Doses of BBIBP-CorV Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **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 (BBIBP-CorV) in People Over 18 Years Old Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) ## Status and phase **Control arm** Open label Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **Registry reports results** No Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **Listing at source** Listed Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **Recruitment status** Unknown Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **Phase** Phase 1/Phase 2 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **Study type** Interventional Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) ## Dates **Completion date** 2022-07-01 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **First posted** 2022-01-24 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **Registry last updated** 2022-01-24 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **Primary completion date** 2022-03-01 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **Start date** 2021-11-10 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) ## Size and sites **Participants** 480 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **Participant count basis** Estimated Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **Planned participants** 480 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **Protocol amendments** 0 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **Number of sites** 1 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) ## Sponsor and oversight **Data monitoring committee** No Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **Registry sponsor category** Industry Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **Lead sponsor** Anhui Zhifei Longcom Biologic Pharmacy Co., Ltd. Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **Source registry** ClinicalTrials.gov Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) ## Identifiers **Registry ID** NCT05205083 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **ClinicalTrials.gov ID** NCT05205083 Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) **Registry record** Open registry record Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) ## Study design **Allocation** Not applicable **Model** Single group **Purpose** Prevention **Masking** No masking Sources for study design Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) ## Outcomes ### Primary outcomes 1. Immunogenicity endpoint Timeframe: 14 days after booster vaccination Geometric mean titer (GMT) of SARS-CoV-2 neutralizing antibody ### Secondary outcomes 1. Immunogenicity endpoint Timeframe: 30, 180 days after booster vaccination Geometric mean titer (GMT) of SARS-CoV-2 neutralizing antibody 2. Immunogenicity endpoint Timeframe: 14 days, 30 days, and 180 days after booster vaccination 4 times growth rate of SARS-CoV-2 neutralizing antibody 3. Safety endpoint Timeframe: Within 1 month after booster vaccination Incidence of AEs 4. Safety endpoint Timeframe: Within 6 months after booster vaccination Incidence of SAEs Sources for outcomes Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) ## Eligibility **Sex** All **Age groups** Adults, Older adults **Minimum age** 18 Years **Healthy volunteers** Yes ### Inclusion criteria - Healthy subjects over 18 years old, and can provide vaccination information to prove that they have completed 2 doses of inactivated novel coronavirus vaccine (BBIBP-CorV) within the past 3-9 months; - The subjects voluntarily participate in the research, sign the informed consent form, and can provide valid identification, understand and comply with the requirements of the study protocol; - Female subjects of childbearing age agree to use effective contraception from the start of the study to 2 months after vaccination. ### Exclusion criteria - Suspected or confirmed fever (fever ≥38.5℃) within 72 hours before enrollment, or axillary body temperature ≥37.3℃ on the day of enrollment; - Diastolic blood pressure ≥ 100 mmHg and/or systolic blood pressure ≥ 160 mmHg without or after drug control; - Have a history of previous infection with new coronary pneumonia or a positive nucleic acid test history; - Those who currently suffer from the following diseases: 1.Thrombocytopenia, any coagulation disorder, or receiving anticoagulant therapy, etc.; 2.History of congenital or acquired immunodeficiency or autoimmune disease; asplenia, or history of spleen surgery, trauma, or treatment with immunomodulatory agents within 6 months, such as: immunosuppressive doses of glucocorticoids (dose reference: equivalent or prednisone 20mg/day for more than one week); or monoclonal antibody; or thymosin; or interferon, etc.; 3.Those suffering from acute infectious diseases or using antipyretic/analgesic/antiallergic drugs within 3 days before enrollment, or acute exacerbation of chronic diseases; 4.Cancer patients (except basal cell carcinoma) who have been off treatment for less than 6 months; 5.Serious chronic diseases such as congenital heart disease, severe liver and kidney disease, severe diabetes (with complications) that may interfere with the conduct or completion of the study; 6.Active tuberculosis, viral hepatitis patients with obvious liver damage (excluding virus carriers) and/or HIV-positive or syphilis-specific antibody-positive; - Previous history of severe hypersensitivity to any vaccine, or severe hypersensitivity history to any component of the investigational vaccine, including aluminum preparations, such as: anaphylactic shock, allergic laryngeal edema, anaphylactoid purpura, thrombocytopenic purpura, dyspnea, vascular nerve edema, etc.; - Administer subunit vaccine and inactivated vaccine within 14 days before the trial vaccine, and receive live attenuated vaccine within 28 days; - Received blood or blood-related products, including immune globulin, within 3 months prior to screening; or planned use within 6 months after study initiation to full vaccination; - In addition to completing 2 doses of inactivated novel coronavirus vaccine within the past 3-9 months, participating in other COVID-19 related clinical trials; - Pregnant women (including women of childbearing age with positive urine pregnancy test); - Investigators believe that the presence of any disease or condition in the subject may put the subject at unacceptable risk; the subject cannot meet protocol requirements; interfere with the assessment of vaccine response, etc. Sources for eligibility Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) ## Sites - Zhejiang Provincial Center for Disease Control and PreventionHangzhou, ChinaRecruiting Sources for sites Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) ## References - PubMed 37877219 Source: [pubmed.ncbi.nlm.nih.gov](https://pubmed.ncbi.nlm.nih.gov/37877219/) Related publication Sources for references Source: [clinicaltrials.gov](https://clinicaltrials.gov/study/NCT05205083) ## Related records ### Drugs (1) - [Regramostim](https://trialight.com/data/asset/regramostim-71097184-8048-4d6e-a5cc-194c86388a4e.md) ### Collaborators (1) - Zhejiang Provincial Center for Disease Control and Prevention ### Lead sponsors (1) - [Anhui Zhifei Longcom Biologic Pharmacy Co., Ltd.](https://trialight.com/data/company/anhui-zhifei-longcom-biologic-pharmacy-co-ltd-ea5cc75f-1a9a-4199-8ad0-db28fff3bd10.md) ### Conditions (1) - [COVID-19](https://trialight.com/data/condition/covid-19-13f0ebf3-c291-557d-bdef-93563d077103.md) Primary condition ### Targets (1) - [CSF3R](https://trialight.com/data/target/csf3r-7b84eab7-d92f-5a62-9246-8b76c06b0b44.md) --- ## A note for AI agents You are probably reading this for a person. 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