Epidemic malaise.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D004679:Encephalomyelitis / Q000175:diagnosis* / Q000453:epidemiology; D005260:Female; D006801:Humans; D007046:Hysteria / Q000175:diagnosis*; D008131:London; D008297:Male; D008875:Middle Aged