Similar results were described by Kato et al.[29] The ORs of co-infection between EBV and Porphyromonas gingivalis were also higher in patients with CP than in health donators.[29,35] Interestingly, Saygun et al[36] found that the EBV has a correlation with P gingivalis but not A actinomycetemcomitans in AgP. Here, ATP5MK is linked to coinfection.