Clinical and immunological comparison of smallpox vaccine administered to the outer versus the inner upper arms of vaccinia-naive adults.

Kirk H. Waibel, Hana Golding, Jody Manischewitz, Lisa R. King, Margaret Tuchscherer, Richard L Topolski, Douglas S. Walsh

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Abstract

BACKGROUND: Current recommendations direct health care providers to administer smallpox vaccine to the upper outer arm. However, concerns about cosmetically bothersome scarring, accidental contact transmission, interference by body tattoos, and even malignant transformation suggest evaluation of alternate vaccination sites is warranted. METHODS: We randomized 20 vaccinia-naive adults to undergo smallpox vaccination on the outer (n = 10) or inner (n = 10) upper arm. Evaluations included major reaction ("take") rates and vaccination site cultures on postvaccination day 7, determination of serum vaccinia-specific neutralizing antibody titers on days 0 (prevaccination) and 21, and determination of adverse events. RESULTS: On postvaccination day 7, a total of 18 participants (9 per group) had major reactions, 17 of whom had culture evidence of viable vaccinia. The inner and outer arm groups had similar major reaction mean sizes (P = .17), but the amount of erythema (in square centimeters) was smaller in the inner arm group (P = .05). At day 21, all participants had higher titers of vaccinia-specific neutralizing antibodies, compared with at day 0, and the geometric mean titer values of the 2 vaccine groups were similar (P = .45). Adverse event rates were similar. CONCLUSION: The comparable clinical, immunological, and tolerability outcomes between smallpox vaccine applied to the conventional upper outer arm site versus the upper inner arm, coupled with modestly less vaccine-site erythema on the inner arm, indicate that the inner arm may be a suitable alternate vaccination site.

Original languageEnglish (US)
JournalClinical infectious diseases : an official publication of the Infectious Diseases Society of America
Volume42
Issue number4
StatePublished - Feb 15 2006
Externally publishedYes

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Smallpox Vaccine
Vaccinia
Arm
Vaccination
Erythema
Neutralizing Antibodies
Vaccines
Smallpox
Health Personnel
Cicatrix

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Clinical and immunological comparison of smallpox vaccine administered to the outer versus the inner upper arms of vaccinia-naive adults. / Waibel, Kirk H.; Golding, Hana; Manischewitz, Jody; King, Lisa R.; Tuchscherer, Margaret; Topolski, Richard L; Walsh, Douglas S.

In: Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, Vol. 42, No. 4, 15.02.2006.

Research output: Contribution to journalArticle

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AU - Tuchscherer, Margaret

AU - Topolski, Richard L

AU - Walsh, Douglas S.

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