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Volume 13, Number 11—November 2007

Letter

Rickettsia felis in Chile

Marcelo B. Labruna*Comments to Author , Maria Ogrzewalska*, Jonas Moraes-Filho*, Paulina Lepe†, Jose Luis Gallegos†, and Javier López†
Author affiliations: *University of São Paulo, São Paulo, Brazil; †Alcantara Veterinary Clinics, Santiago, Chile;

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Table

End-point titers of indirect immunofluorescence assay (IFA) for 6 Rickettsia species in cats from a household in Santiago, Chile*

Cat no. IFA titers for Rickettsia antigens
PAIHR
R. felis R. rhipicephali R. bellii R. parkeri R. rickettsii R. amblyommii
1 128 R. felis
2 256 256 128
3 512 128 64 R. felis
5 64
6 64 64
7 64
8 128 R. felis
9 64
10 64
11 128 R. felis
12 64
14 128 64 128 128
15 64
19 64
21 128 64 128 128 128
22 64 64 64 64

*PAIHR, possible antigen involved in a homologous reaction (serum showing for a Rickettsia species titer at least 4-fold higher than that observed for any other Ricketttsia species was considered homologous to the first Rickettsia species); –, nonreactive at titer >64.

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