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Clinical Trial Summary

Evaluation of immunogenicity and safety of the subjects aged 60 years and above with chronic bronchitis and chronic obstructive pulmonary disease recruited to receive the schedule of three doses of inactivated COVID-19 vaccine on day 0, day 21 and day 111, respectively .


Clinical Trial Description

The subjects aged 60 years and above with chronic bronchitis and chronic obstructive pulmonary disease were recruited to receive three doses of inactivated COVID-19 vaccine on day 0, day 21 and day 111, respectively. Blood samples were collected before the first dose, 28 days after the second dose, before the third dose, 28 days after the third dose and 6 months after the third dose, respectively. Any local or systemic adverse events that occurred within 21/28 days after vaccination will be recorded. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05075057
Study type Interventional
Source China National Biotec Group Company Limited
Contact Xianfeng Zhang
Phone (86)17702795737
Email hbcdczxf@163.com
Status Recruiting
Phase Phase 4
Start date October 8, 2021
Completion date June 30, 2022

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