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Volume 30, Number 5—May 2024
Research Letter

Detection of Influenza D Antibodies in Dogs, Apulia Region, Italy, 2016 and 2023

Claudia Maria TrombettaComments to Author , Serena Marchi, Maria Giovanna Marotta, Ana Moreno, Chiara Chiapponi, Emanuele Montomoli, Gianvito Lanave, Michele Camero, and Vito Martella
Author affiliations: University of Siena, Siena, Italy (C.M. Trombetta, S. Marchi, M.G. Marotta, E. Montomoli); VisMederi Research srl, Siena (C.M. Trombetta, E. Montomoli); Istituto Zooprofilattico Sperimentale della Lombardia e dell’Emilia-Romagna, Brescia, Italy (A. Moreno, C. Chiapponi); VisMederi srl, Siena (E. Montomoli); University of Bari, Valenzano, Italy (G. Lanave, M. Camero, V. Martella)

Main Article

Table 2

Serum testing for influenza D virus results showing HI and VN assay titers of dog samples collected in 2023 in the Apulia region, Italy*

Sample no. D/bovine/Oklahoma/660/2013
 D/swine/Italy/199724–3/2015
 C/human/Victoria/2/2012
HI VN HI VN HI
5 10–10 <10 <10 <10 40–40
18 10–10 20–20 <10 <10 <10
35 10–20 <10 <10 <10 <10
45 10–10 <10 <10 <10 <10
50 20–20 <10 <10 <10 20–10
55 40–40 10–10 <10 <10 80–80
98 10–10 <10 <10 <10 <10
118 10–10 20–20 <10 <10 40–40
137 160–160 80–80 <10 <10 <10
167 10–10 <10 <10 <10 80–80
183 20–20 <10 <10 <10 <10
216 20–20 20–20 <10 <10 <10

*Samples were tested against 2 strains of IDV, D/bovine/Oklahoma/660/2013 (D/660 lineage) and D/swine/Italy/199724–3/2015 (D/OK lineage), and against 1 strain of influenza C virus, C/human/Victoria/2/2012. For calculation purposes, titers below the detectable threshold of 10 were expressed as <10. HI, hemagglutination inhibition assay; VN, virus neutralization assay.

Main Article

Page created: March 22, 2024
Page updated: April 24, 2024
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