Volume 17, Number 4—April 2011
Vaccinia Virus Infections in Martial Arts Gym, Maryland, USA, 2008
||Date of onset
|1||26/M||Jun 16||Pustules on face, arm, back of knee||Unknown viral exanthem||+||NA|
|2||28/M||Mid–late Jun||Vesicles on right forearm||None||Weak +||IgM+ (0.243), IgG+ (0.116)|
|3||31/M||Jun 25||Unknown presentation||MRSA‡||NA||IgM+ (0.389), IgG+ (0.227)|
|4||31/M||Late Jun/early Jul||Unknown presentation||MRSA‡||NA||IgM+ (0.137), IgG+ (0.2195)|
*Ig, immunoglobulin; NA, not applicable; MRSA, methicillin-resistant Staphylococcus aureus.
†For purposes of this investigation, a case-patient is defined as a person whose clinical samples are positive for vaccinia virus DNA by PCR, or a person with lesions or a rash (macular, papular, vesicular, or pustular) and whose serum sample was positive for anti-orthopoxvirus IgM antibodies (indicative of a recent orthopoxvirus exposure). No case-patients had received a previous smallpox vaccination.
‡Clinically diagnosed, no laboratory confirmation.
1These authors contributed equally to this article.