REACTIONS

_IMMEDIATE:_ Very little pain, if any

_LOCAL:_

1. 2-8 Hours—Mild to severe pain with redness and vesiculation at bite

site, followed by ischemia

2. 3-4 Days—Star-shaped firm area of deep-purple color with necrosis

3. 7-14 Days—Central area of depression and ulceration

4. 21 Days—Healing and scar formation. May not heal sufficiently and

may require skin grafting

_SYSTEMIC:_

1. Fever, chills, nausea, vomiting, weakness, joint pain

2. Morbilliform or petechial generalized eruption

3. Occasionally serious hematological disturbances—hemolytic anemia,

thrombocytopenia

_DEATHS:_ Reported; usually in children, due to renal failure and

hematological abnormalities.

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