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Volume 14, Number 2—February 2008


Diagnosis of Cystic Echinococcosis, Central Peruvian Highlands

Cesar M. Gavidia*Comments to Author , Armando E. Gonzalez*, Wenbao Zhang†, Donald P. McManus†, Luis Lopera*, Berenice Ninaquispe*, Hector H. Garcia‡, Silvia Rodríguez§, Manuela Verastegui‡, Carmen Calderon*, William K.Y. Pan¶, and Robert H. Gilman¶
Author affiliations: *Universidad Nacional Mayor de San Marcos, San Borja, Lima, Peru; †The Queensland Institute of Medical Research, Brisbane, Queensland, Australia; ‡Universidad Peruana Cayetano Heredia, Lima, Peru; §Instituto de Ciencias Neurologicas, Lima, Peru; ¶Johns Hopkins University, Baltimore, Maryland, USA;

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Table 2

Frequency of seropositive results among persons with cystic echinococcosis–positive ultrasonography and radiography imaging results, central Peruvian Highlands*

Antigen Ultrasonography,† % (95% CI)
Radiography‡ Overall,§ % (95% CI)
With calcification Without calcification With calcification Without calcification
IBCF 35.7 (21.6–52) 47.1 (23–72.2) 22.2 (2.8–60) 32.7 (20–47.5) 34.6 (17.2–55.7)
rEpC1-GST 16.7 (7–31.3) 29.4 (10.3–56) 33.3 (7.5–70) 18.4 (8.8–32) 26.9 (11.6–47.8)

*CI, confidence interval; IBCF, antigen was bovine hydatid cyst fluid; rEpC1-GST, antigen was recombinant EpC1 glutathione S-transferase.
†Frequency of positive abdominal ultrasonographic results.
‡Frequency of positive chest radiographic results.
§Ultrasonography, radiography, or both.

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