Wasu cututtuka suna karkashin bincike don gano idan suna da kwayar cuta a matsayin mai haddasa, kamar yiwuwar haɗi tsakanin kwayar cutar herpes ta mutum 6 (HHV6) da cututtukan jijiyoyin jiki kamar cututtukan ƙwayar cuta da cututtukan ƙwayar cuta. Akwai muhawara kan ko bornavirus, wanda a baya aka yi tunanin yana haifar da cututtukan jijiyoyin jiki a cikin dawakai, na iya zama sananne a cikin kwayoyin cuta na yau da kullun, wanda zai iya haifar da cututtukan cututtukan cututtukan fata a cikin jikin mutum duk da cewa suna da ƙwayoyin cuta da yawa da ke haifar da cututtukan cututtukan cututtukan fata, irin su kwayar cutar hepatitis B, wanda a wasu lokutan ana kiranta da cutar herpes.
zazzabi na glandular