For each fate, the scenarios of single phage dominance, where only one phage expresses its gpD fluorescent (lytic) or cI transcriptional (lysogenic) reporter are defined as ‘pure lysis/lysogeny signals,' and cases where both phages express their respective reporters are defined as ‘mixed lysis/lysogeny signals.' For lytic cells with dual-colour infections, we observed pure lysis at surprisingly high frequency relative to mixed lysis, indicative of possible competitive interactions within the lytic cells. The gene discussed is NDUFB6; the disease is infection.