First of all, unless you include answer options for both positive and negative test results, the poll results will not tell you much (in terms of what percentage of patients have each virus).
Secondly, it is necessary to define what you mean by positive and negative, because in ME/CFS, viral antibody test results are interpreted differently to the way they are interpreted by regular infectious disease (ID) doctors.
Thirdly, there are more viruses linked to ME/CFS than listed. The main ME/CFS-associated viruses are: coxsackievirus B, echovirus, EBV, cytomegalovirus, HHV-6, parvovirus B19, and also the intracellular bacterium Chlamydia pneumoniae. Other viruses possibly linked to ME/CFS include varicella and herpes simplex I and 2, and HHV-7.
By the way, I have not seen any medical or scientific authority take up the name SEID. Everyone is still calling it ME/CFS.