Novel coronavirus pneumonia (COVID-19)
Conditions
Interventions
Cohort 1:A8G6 SARS-CoV-2 Neutralizing Antibody Combination Nasal Spray/Placebo
Cohort 2:A8G6 SARS-CoV-2 Neutralizing Antibody Combination Nasal Spray/Placebo
Cohort 3:A8G6 SARS-CoV-2 Neutralizing Antibody Combination Nasal Spray/ Placebo
Cohort 4:A8G6 SARS-CoV-2 Neutralizing Antibody Combination Nasal Spray/Placebo
Sponsors
The Second Affiliated Hospital of Chongqing Medical University
Eligibility
Sex/Gender
All
Age
18 Years to 65 Years
Inclusion criteria
Inclusion criteria: 1. Subjects fully understand the purpose, nature, method and possible adverse reactions of the experiment, voluntarily participate in the experiment, and sign informed consent before the experiment begins; 2. Healthy subjects aged 18-65 years (including the threshold) with an appropriate sex ratio between men and women; 3. The subjects had no birth plan for 3 months from the date of signing the informed consent to the end of the study, and agreed to voluntarily take effective and appropriate contraceptive measures with their partners during this period; 4. The subject agrees that from the beginning of the study (-1 day) to the end of the study, except for this study, only samples of NCOV nucleic acid from throat swabs will be taken, and nasal swabs will not be taken; 5. The subjects had not received any type of SARS-CoV-2 vaccine within 3 months prior to enrollment, and had no NCOV vaccination plan during the study period; 6. Subjects can communicate well with researchers and understand and comply with the requirements of this study.
Exclusion criteria
Exclusion criteria: 1. Allergic to any ingredient in this product and auxiliary materials; Or allergic (such as allergic to two or more drugs, food); 2. Subjects with symptoms of acute upper respiratory tract infection within 1 week before administration; 3. Subjects with acute episodes of chronic rhinitis or anatomical abnormalities affecting drug absorption in the nose; 4. Subjects with a history of asthma; 5. Asplenia or functional asplenia caused by any condition; 6. Diseases or factors with clinical abnormalities that need to be excluded, including but not limited to diseases of the nervous system, cardiovascular system, kidney, liver, gastrointestinal system, respiratory system, metabolism, bone system and other systems; 7. Vital signs, physical examination, laboratory examination (such as white blood cell count less than 3.0*10^9/L, platelet count less than 75*10^9/L, TB > 1.5*ULN, ALT > 1*ULN, AST > 1*ULN) and electrocardiogram examination of any items abnormal and judged by the investigator to be clinically significant; 8. Use of any prescription or over-the-counter drugs within 14 days before administration; 9. Subjects who had received immunosuppressive therapy, cytotoxic therapy or inhaled corticosteroid therapy within 6 months before administration; 10. A history of drug abuse or use of any drug in the 6 months prior to drug administration; 11. Pregnant and lactating subjects; 12. The subject has not taken effective and appropriate contraceptive measures within 30 days before the drug administration; 13. The subjects had sperm and egg donation plans within 3 months after the first drug administration to the end of the study; 14. Blood donation or massive blood loss (>=200mL), receiving blood transfusion or using blood products within 3 months prior to drug administration; Or plan to donate blood or blood components during the trial; 15. Have participated in other drug clinical trials or device clinical trials, and have taken test drugs or used test devices within 3 months before drug administration; 16. Subjects may be unable to comply with the protocol to complete the study for other reasons or the investigator may determine that participation is not appropriate.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Safety evaluation index;Immunotoxicity;Immunogenicity;Drug concentration; | — |
Countries
China
Contacts
Public ContactZhang Dazhi, Guo Huilin
The Second Affiliated Hospital of Chongqing Medical University
Outcome results
None listed