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Vaccine. 2009 Mar 4;27(10):1645-50. doi: 10.1016/j.vaccine.2008.10.084. Epub 2008 Nov 18.

Possible autoimmune reactions following smallpox vaccination: the biologic false positive test for syphilis.

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  • 1Acambis Inc, 38 Sidney Street, Cambridge, MA 02139, United States.

Abstract

Due to the threat of bioterrorism, large-scale clinical trials of a new cell culture smallpox vaccine were conducted. Biologically false positive (BFR) serological reactions to viruses (hepatitis B and C, HIV) and syphilis were evaluated. BPR rapid reagin tests (RPR) to syphilis occurred in 19% and false positive tests for antibody to hepatitis B in 3.3% of 90 healthy adults undergoing primary vaccination. Most subjects (94%) were RPR-positive on Day 15 after vaccination and all seroreverted within 2 months thereafter. One subject with myocarditis was RPR-negative. One RPR-positive and 1 RPR-negative subject had elevated CK-MB enzymes without other evidence for myocarditis.

PMID:
19022322
[PubMed - indexed for MEDLINE]
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