“…However, the review of 89 reported cases of FeL where cats were serologically tested for FIV and Feline Leukemia Virus (FeLV) provides a 30.3% prevalence of FIV coinfection in cats with FeL and only four cats with FeLV co-infection (three of them also FIV positive) were detected (Bardagi et al, 2016;Basso et al, 2016;Brianti et al, 2015;Britti et al, 2005;Caracappa et al, 2008;Coelho et al, 2010;Dalmau et al, 2008;Dedola et al, 2015;Fileccia, 2012;Grevot et al, 2005;Hervás et al, 1999;Ibba, 2009;Laruelle-Magalon and Toga, 1996;Leiva et al, 2005;Marcos et al, 2009;Migliazzo et al, 2015;Ozon et al, 1998;Pennisi et al, 2013;Pimenta et al, 2015;Pocholle et al, 2012;Poli et al, 2002;Richter et al, 2014;Rüfenacht et al, 2005;Sanches et al, 2011;Verneuil, 2013;Vides et al, 2011). Other FeL cases reported in FIV negative cats were diagnosed in animals affected by immune-mediated diseases (and treated with immunosuppressive drugs), neoplasia, or diabetes mellitus (Bardagi et al, 2016;Basso et al, 2016;Caracappa et al, 2008;Laruelle-Magalon and Toga, 1996;Leiva et al, 2005;Maia et al, 2015;Marcos et al, 2009;Maroli et al, 2007;Migliazzo et al, 2015;Rüfenacht et al, 2005) and impaired immuno-competence is overall suspected in about half clinical cases of FeL. In...…”