case_images: PMC7083363_01
case_images: Panel A shows erythema at the site of the bacillus Calmette-Guerin (BCG)
  immunization scar two days after influenza vaccination. Panel B shows the
  same scar four months after vaccination with complete resolution of
  symptoms.
case_images: 1678-9849-rsbmt-53-e20190390-gf1.jpg
case_images: PMC7083363_01_1678-9849-rsbmt-53-e20190390-gf1.jpg
case_images: f1
case_images: A nine-year-old Mexican boy presented with pain, swelling, and redness at the BCG scar (Figure 1A ) two days after an influenza vaccination (administered 3 cm from the BCG scar). Erythema and induration at the BCG scar lasted 48 h, resolving without topical or systemic treatments (Figure 1B). 