Kissing as a mode of transmission of infectious mononucleosis.
D000293:Adolescent; D000328:Adult; D000375:Aging; D002648:Child; D002675:Child, Preschool; D005260:Female; D006069:Gonorrhea / Q000453:epidemiology; D006801:Humans; D007223:Infant; D007244:Infectious Mononucleosis / Q000453:epidemiology* / Q000209:etiology; D008297:Male; D012723:Sex; D012725:Sexual Behavior