Similarly, Cameron and co-workers did not find significant differences in EBV, HHV-6, nor CMV seropositivity and viral loads between 20 ME/CFS patients and 10 controls using qPCR as well as serological assays for HHV-6 IgG, CMV IgM, and EBV IgG VCA p18, IgG EBNA-1, and IgG EA [83]. Here, CD40LG is linked to myalgic encephalomeyelitis/chronic fatigue syndrome.