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Volume 13, Number 6—June 2007

Letter

Human Oestrus sp. Infection, Canary Islands

Marion Hemmersbach-Miller*†, Rita Sánchez-Andrade‡, Alicia Domínguez-Coello§, Adnan Hawari Meilud*, Adolfo Paz-Silva‡, Cristina Carranza¶, and Jose-Luis Pérez-Arellano¶Comments to Author 
Author affiliations: *Hospital Ntra. Sra. de los Reyes, Valverde. El Hierro, Spain; †Hospital San Roque Maspalomas, Gran Canaria, Spain; ‡Santiago de Compostela University, Lugo, Spain; §Veterinarian of the Cooperativa de Ganaderos de El Hierro, El Hierro, Spain; ¶University of Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain;

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Table

Results and interpretation, Oestrus sp. infection, Canary Islands*†

Human Dogs Sheep Goats
OD
Interpretation
OD
Interpretation
OD
Interpretation
OD
Interpretation
0.658 Positive 0.677 Positive 0.639 Positive 0.838 Positive
0.824 Positive 0.685 Positive 0.535 Positive
0.226 Negative 0.594 Positive
0.187 Negative 0.673 Positive
0.622 Positive

*Results are expressed as optical density (OD), and interpretation (positive/negative) was made by using the following cut-offs: in sheep: 0.369 (0.1718 + 3 × 0.066); goats: 0.406 (0.211 + 3 × 0.065); human 0.32 (0.17 + 3 × 0.049); dogs: 0.493 (0.37 + 3 × 0.041).
†One sample of positive and negative control samples was added to each plate. Sheep and goat sera from animals with a known history of O. ovis exposure were used. When positive sera were not available (human and dogs), we used only negative sera, and the cut-off was estimated as the mean OD of the negative sera plus 3 SDs (7).

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