Key Points
Question
Is administration of bacillus Calmette-Guérin (BCG) vaccination within 7 days of birth safe, immunogenic, and efficacious in infants who are preterm and/or have low birth weight, compared with BCG vaccination at later points or in infants who are normal birth weight?
Findings
In this systematic review and meta-analysis, we found no increase in adverse reactions or infant mortality after BCG vaccination within 7 days of birth compared with vaccination delayed after 7 days in clinically stable infants who were preterm and/or had low birth weight. Meta-analysis revealed no differences for scar formation or tuberculin skin test conversion.
Meaning
Currently, evidence from clinically stable infants who were born after more than 30 weeks’ gestational age and/or weighing more than 1.5 kg seems to support BCG vaccination within 7 days of birth.