Evaluation of BBIBP-CorV Sinopharm COVID-19 vaccine effectiveness in Sri Lanka: a test-negative case control study.

ABSTRACT:

Objectives

There is limited research on real-world effectiveness of BBIBP-CorV Sinopharm COVID-19 vaccine. This study evaluated real-world effectiveness of Sinopharm vaccine in Sri Lanka by assessing absolute vaccine efficacy.

Design and setting

A retrospective test-negative case-control study was conducted at ten large government hospitals across the country.

Participants

Consecutive adults aged ≥18 years attending outpatient departments who tested reverse-transcription-PCR positive for SARS-CoV-2 during the study period were recruited.

Main outcome measures

An interviewer-administered questionnaire was administered, and outcome of COVID-19 infection was assessed in cases.

Results

Of 1829 recruited, 914 (49.9%) were male, and mean age was 45.2 (SD 15.3)

SUBMITTER: De Silva ST 

PROVIDER: S-EPMC11605810 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature