Table 1.

Search strategy for use in PubMed

Query	Fields	Search term
#1	All fields	epidemiology OR prevalence OR incidence OR burden OR mortality OR morbidity
#2	All fields	fulminant OR acute
#3	All fields	hepatic failure OR liver failure
#4	All fields	hepatitis a virus OR HAV OR hepatitis b virus OR HBV OR hepatitis c virus OR HCV OR HCV OR hepatitis d virus OR HDV OR hepatitis e virus OR HEV OR epstein-barr virus OR EBV OR herpes simplex virus-1 OR HSV1 OR herpes simplex virus-2 OR HSV2 OR varicella-zoster virus OR VZV OR parvovirus b19 OR human parainfluenza viruses OR yellow fever virus OR YFV OR human herpesvirus 6 OR HHV-6 OR cytomegalovirus OR CMV OR adenovirus OR HAdVs
#5	All fields	humans
#6	N/A	#1 AND #2 AND #3 AND #4 AND #5