Medical Care
Treatment for the complications associated with vaccinia virus is supportive.
- VIG may be helpful in selected patients, such as those with generalized vaccinia and eczema vaccinatum or those at high risk for developing complications following vaccination with vaccinia. VIG is less successful when used for treatment of progressive vaccinia and CNS complications.
- VIG was developed from pooled sera collected from vaccinated patients in the 1960s and is available from the Centers for Disease Control and Prevention (CDC) in Atlanta, GA.
- VIG is contraindicated in patients with allergies to VIG or sensitivity to human pooled serum.
- Cidofovir and adefovir are being investigated to evaluate the clinical effect and outcomes as a secondary treatment of vaccinia-related complications that do not respond to VIG treatment. An oral form of this drug is currently under development.
Surgical Care
Surgery is usually unhelpful in the treatment of complications, although debridement of nonviable tissue in cases of vaccinia necrosum may be considered. Obtaining a biopsy of suspected lesions can aid in the diagnosis.
Consultations
- Consultation with a dermatologist may be helpful when the diagnosis of a skin lesion is in doubt.
- Suspected cases of vaccinia-related complications should be treated in consultation with an expert in infectious diseases and poxvirus virology.
- Selective consultation for specific adverse events is indicated (eg, an ophthalmologist for eye complications or a neurologist for nervous system complications).
Diet
No special dietary precautions apply to patients with vaccinia-related complications.
Activity
No specific activity limitations apply to patients with vaccinia-related complications.
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| Complication | Number of cases from 450,293 vaccinations administered between 12/13/2002 and 5/28/2003 | Department of Defense rate per million vaccinees (95% confidence interval) | Historical number of cases from 1950s and 1960s |
| Death | 0 | 0 (0-3.7) | Age 1 y at first vaccination - 5 per 1 million primary vaccinees |
| Age 1-4 y at first vaccination - 0.5 per 1 million primary vaccinees | |||
| Age 5-19 y at first vaccination - 0.5 per 1 million primary vaccinees | |||
| Age ≥ 20 y at first vaccination - No data | |||
| Encephalitis | 1 | 2.2 (0.6-7.2) | 3 per 1 million primary vaccinees |
| Vaccinia necrosum/progressive vaccinia | 0 | 0 (0-3.7) | Approximately 1 patient per million during primary or revaccination |
| Usually fatal over a period of several months | |||
| Eczema vaccinatum | 0 | 0 (0-3.7) | 1 per 100,000 primary vaccinees |
| 1 per 1 million revaccinees | |||
| Generalized vaccinia | 36 | 80 (63-100) | Occasional occurrence in immunocompetent individuals |
| 3 per 100,000 primary vaccinees | |||
| 1 per 1 million revaccinees | |||
| Accidental vaccinia | 48 | 107 (88-129) | 3 per 100,000 to 1 million vaccinees |
| Erythematous rash | 36 | 80 (63-100) | Approximately 1 per 100,000 primary vaccinees* |
| Acute myopericarditis | 37 | 82 (65-102) | 100 per 1 million vaccinees |
| *Incidence was slightly higher when vaccination occurred before age 1 year. | |||

