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Volume 15, Number 7—July 2009


Cluster of Sylvatic Epidemic Typhus Cases Associated with Flying Squirrels, 2004–2006

Alice S. Chapman1, David L. Swerdlow, Virginia M. Dato, Alicia D. Anderson, Claire E. Moodie, Chandra Marriott, Brian Amman, Morgan Hennessey, Perry Fox, Douglas B. Green, Eric Pegg, William L. Nicholson, Marina E. Eremeeva, and Gregory A. DaschComments to Author 

Author affiliations: Centers for Disease Control and Prevention, Atlanta, Georgia, USA (A.S. Chapman, D.L. Swerdlow, A.D. Anderson, C.E. Moodie, B. Amman, M. Hennessey, D.B. Green, E. Pegg, W.L. Nicholson, M.E. Eremeeva, G.A. Dasch); Pennsylvania Department of Health, Pittsburgh, Pennsylvania, USA (V.M. Dato, C. Marriott, P. Fox)

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Table 4

Serologic and PCR testing results of trapped flying squirrels, wilderness camp, Pennsylvania, March 2006*

Squirrel (ID) Site trapped IgG titer† to 
Rickettsia prowazekii PCR result (specimen)
1 (P19) Tent 512 – (blood)
2 (A59) FS-1 32 – (blood)
3 (A60) FS-1 <16 – (heart, blood)
4 (P1) Tent 64 + (heart)
5 (P28) Tent 32 – (blood)
6 (A41) FS-1 128 – (blood)
7 (A53) FS-1 <16 – (blood)
8 (C4) Cabin A <16 – (blood)
9 (A43) Cabin B <16 + (heart)
10 (A26) FS-1 1,024 + (blood)
11 (A56) FS-1 <16 – (blood)
12 (A60h) FS-1 <16 + (blood)
13 (H12) FS-2 64 + (blood)
14 (C52) Cabin A 128 – (blood)

*Ig, immunoglobulin; ID, identification number; FS, field site.
†Heavy plus light chain.

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1Current affiliation: US Air Force, Scott Air Force Base, Illinois, USA.