Table 2.

Electronic database search.

Electronic database	Search terms
Cochrane Library	(“epstein barr” OR “ebv” OR “herpesvirus 4”) AND (“vaccin*” OR “immuniz*” OR “immunis*”)
ClinicalTrials.gov	“epstein barr” OR ebv OR “herpesvirus 4” and vaccine
Embase	#1: ‘epstein barr’:ab,ti OR ‘ebv’:ab,ti OR ‘herpesvirus 4’:ab,ti #2: ‘vaccin*’:ab,ti OR ‘immuniz*’:ab,ti OR ‘immunis*’:ab,ti #3: #1 AND #2
PubMed	(“Epstein-Barr Virus Infections”[MeSH] OR “Herpesvirus 4, Human”[MeSH] OR epstein barr[tiab] OR ebv[tiab] OR herpesvirus 4[tiab]) AND (“Vaccines”[MeSH] OR “Vaccination”[MeSH] OR “Immunization”[MeSH] OR vaccin*[tiab] OR immuniz*[tiab] OR immunis*[tiab])
Scopus	(“epstein barr” OR “ebv” OR “herpesvirus 4”) AND (“vaccin*” OR “immuniz*” OR “immunis*”)
Web of Science	#1: TS=(“epstein barr” OR “ebv” OR “herpesvirus 4”) #2: TS=(“vaccin*” OR “immuniz*” OR “immunis*”) #3: #1 AND #2
WHO GIM	(“epstein barr” OR ebv OR “herpesvirus 4”) AND (vaccin* OR immuniz* OR immunis*)
Google Scholar	(“epstein barr” OR ebv OR “herpesvirus 4”)(vaccin* OR immuniz* OR immunis*)