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Effectiveness of Chinese COVID-19 Vaccines in Latin America and the Caribbean

Effectiveness of Chinese COVID-19 Vaccines in Latin America and the Caribbean

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05475704
Enrollment
59
Registered
2022-07-27
Start date
2022-05-23
Completion date
2023-07-11
Last updated
2023-08-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

COVID-19

Brief summary

This multi-country study seeks to collect real-world evidence (RWE), from Latin American and Caribbean countries, on the effectiveness of China-made COVID-19 vaccines in different populations, against different clinical outcomes, and when administered in different schedules.

Detailed description

This multi-country study seeks to collect RWE, from Latin American and Caribbean countries, on the effectiveness of China-made COVID-19 vaccines in different populations, against different clinical outcomes and when administered in different schedules. The vaccines of interest are the following: * 'Sinovac-CoronaVac' (Sinovac Biotech Ltd., Beijing, China), * 'BIBP COVID-19 Vaccine' ('Covilo'; 'BIBP-CorV') (Sinopharm, Beijing Institute of Biological Products, China), * 'Convidecia' ('AD5-nCOV') (CanSino Biologics, Tianjin, China).

Interventions

None listed

Sponsors

Centers for Disease Control and Prevention, China
CollaboratorOTHER_GOV
P95
Lead SponsorINDUSTRY

Study design

Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Patients need to fulfill all the following criteria to be eligible for the study: * Being 18 years old or older * Ever eligible for vaccination2 with any of the Chinese COVID-19 vaccines provided in their country as per national/regional immunization recommendations prior to hospital admission * ER consultation or hospitalization due to SARI * Willing and able to provide informed consent (or by a legally accepted representative if the patient is not able to provide a signature by him/herself)

Exclusion criteria

Patients that fulfill one or more of the following criteria will not be eligible for the study: * Patients vaccinated against COVID-19 but not with the vaccines of interest * Patients admitted or hospitalized for other condition than SARI * Patients to whom it is not possible to perform a diagnostic test (antigen or PCR) for SARS-CoV-2

Design outcomes

Primary

MeasureTime frameDescription
SARS-CoV-2 detectionSpecimen collected between d-14 and d0, where d0 is the day at ER visit or hospital admission (or specimen collected within 24 hours upon arrival at the hospital)The outcome of interest for the primary analysis will be the SARS-CoV-2 detection from study participants who present to the ER (ER visit) or are hospitalized with SARI, as determined through the standard of care diagnostic testing (i.e., antigen test or PCR).

Secondary

MeasureTime frameDescription
Level of disease severity- The Time Frame will be defined as the time from ER/Hospital admission to the date of hospital discharge or date of death at hospitalLevel of disease severity of participants will be characterized according to the WHO COVID-19 Clinical Progression Scale: 1. Ambulatory mild disease, without death 2. Hospitalized (moderate disease) without in-hospital death 3. Hospitalized (ICU, severe disease) without in-hospital death 4. In-hospital death (including death in the ER)

Countries

Argentina, Colombia, Dominican Republic, Peru

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026