Nature of reaction

BCG

MWV

PPD

Mild

Papule at the injected site (2 - 4 weeks)

Ulceration (1 - 2 months)

Papule at the injected site,

Induration, ulceration, scar formation.

Redness,

Scar (2 - 5 months)

Induration 48 - 72 hr

Severe

Local; abscess, keloid, suppuration 2 - 6 months.

Local; abscess, adenitis

Local; lymphadenitis

Systemic; anaphylactic reaction, foreign body reaction

Systemic; Cutaneous lesions, osteitis, disseminated BCG, immune reconstitution syndrome

Systemic; fever 2 days after intradermal injection, Pain and paraesthesia distal to the injected site lasting for one week