Stafilococchi coagulasi negativi : dibattito aperto

Coagulase-negative Staphylococci (CNS) intramammary infections are very common, especially in heifers, but the possibility of progression into subclinical or clinical mastitis is conditioned by several variables. First of all, there is not agreement neither of opinions nor of data about different issues regarding this bacterial group: pathogenicity, epidemiology, effect on milk yield. The picture is complicated due to variability and heterogeneity of CNS, a constantly growing group. In the next future, genotyping tools applied to the field may provide further evidence about management of those microorganisms.