UK scientists pinpointed a usually-harmless virus as being the main culprit for the unusual liver illness, which has sickened 200 youngsters in the UK and left a dozen needing transplants.UK scientists pinpointed a usually-harmless virus as being the main culprit for the unusual liver illness, which has sickened 200 youngsters in the UK and left a dozen needing transplants.Read MoreHealth News | Mail Online