Tuberculous Abscess At Diphtheria, Pertusis And Tetanus (DPT) Vaccination Injection Site

Abstract

Localized abscess at the same site of bacillus Calmette-Guerin (BCG) vaccine is a known complication. However occurrence of such abscess at other sites is uncommon. We report a case of a small child who developed swelling over the thigh following intramuscular injection at 14 weeks for DPT vaccination. Histopathology showed caseating granulomatous inflammation and tuberculosis polymerase chain reaction (TB-PCR) was positive, culture report came as Acinetobacter species. Specimen was sent for gene mapping and they isolated BCG strain. Inadvertent inoculation of BCG vaccine in place of DPT vaccine at 14 weeks could be a possible reason.