Al Waili B, Al Mufarajii N, Al Hashmi S, Al Ajmi A, Al Sukaiti N. Bacillus Calmette-Guérin vaccine-related complications in children in Oman.
Ann Saudi Med 2021;
41:24-30. [PMID:
33550906 PMCID:
PMC7868619 DOI:
10.5144/0256-4947.2021.24]
[Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 11/14/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND
Bacillus Calmette-Guérin (BCG) vaccine-related complications are frequently observed in children in Oman. There are a few regional studies on BCG complications, but none from Oman.
OBJECTIVE
Evaluate the spectrum of BCG-vaccine related complications and immune status in Omani children.
DESIGN
Retrospective cross-sectional study.
SETTING
Referral tertiary hospital.
METHODS
Children aged younger than 13 years old and with complications of BCG vaccination recorded from 2006-2018 were included in this study. Clinical characteristics, treatment, immune workup and outcome were reviewed from hospital records.
MAIN OUTCOME MEASURES
Different BCG vaccine-related complications categorized by the site of involvement.
SAMPLE SIZE
226.
RESULTS
Of the 226 children had BCG-vaccine related complications, 99% received BCG vaccine immediately after birth. The median age of presentation was 4 months. The most common complication was isolated BCG lymphadenitis (85%, n=192), followed by BCG-related osteomyelitis (10.2%, n=23) and disseminated BCG infection (4.9%, n=11). The median age of presentation of disseminated BCG was 5 months, with different organs involved. Out of 11 children with disseminated BCG infection, 72.7% (n=8) had primary immune deficiency (PID), including chronic granulomatous disease (CGD, n=5), severe combined immunodeficiency (SCID) (n=2); 1 patient had Mendelian susceptibility to mycobacterial disease (IFNGR2 deficiency); 2 patients with PID not yet identified and the 1 with a non-specific PID had blood or saliva samples sent for whole-exome sequencing.
CONCLUSION
Because of the spectrum of BCG vaccine-related complications, including the most severe in children with PID, we suggest that delaying the BCG vaccine from birth to 6 months may prevent disseminated BCG diseases and their complications in children with PID because any PID will have been identified before 6 months. Further studies are needed to guide this recommendation.
LIMITATIONS
Single center-based study that may not provide a full overview of all BCG vaccine-related complications in Oman. Unavailability of details of some microbiological results and an inability to determine the detailed management for all patients.
CONFLICT OF INTEREST
None.
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