Progressive Vaccinia: Prevention

In the absence of smallpox, patients with T-cell abnormalities should not receive smallpox vaccine. Not all patients suffering from immune defects, cancer, HIV or receiving immunosuppressive therapy are T-cell deficient. Consultation with an immunologist is advised for patients in these categories, but prudence would dictate they not receive vaccine in non-emergent situations. Patients in these categories should also be cautioned not to come in contact with vaccinated individuals.

If a smallpox outbreak occurs, the ACIP and CDC have recommended that all patients in these categories at risk of exposure be vaccinated. That recommendation is likely to be reviewed as deliberations about smallpox vaccine policy continue. For further information, please visit the Advisory Committee on Immunization Practice (ACIP) website and the CDC Public Health Emergency Preparedness & Response Smallpox website.

An appropriate history suggestive of T-cell immunodeficiency, either on a congenital basis or secondary to some other disease or treatment identifies a person as potentially susceptible to Progressive Vaccinia.

The following areas should be explored with the potential vaccinee. These potential susceptibilities apply to the:

Vaccinee
His/her contacts
Potential Susceptibilities
Condition Notes
Immunodeficiency, congenital or acquired Is there a known immunodeficiency, congenital or acquired?
Family history
History of prior infections compatible with CMI deficiency
Disease associated with immunodeficiency

HIV
AIDS
Many Cancers
Immunosuppressive therapy Is the patient or the contact receiving any immunosuppressive therapy?
For cancer
For maintenance of an organ or other transplant
Steroid therapy equivalent to 1-2 mgm per kg of prednisone daily
For any disorder that requires the use of immunosuppressive therapy, especially that which reduces T-cell immune function
Is the patient suffering from any autoimmune disorder?
Rheumatoid arthritis
Asthma
What medications is the patient receiving for these conditions?

Are they immunosuppressive?

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