Cochrane Library Literature Search Strategy
Search Number	Search Terms
Disease
#1	MeSH descriptor: [Plague] explode all trees
#2	(“plague”):ti,ab,kw
#3	(“pneumonic plague”):ti,ab,kw
#4	(“pulmonic plague”):ti,ab,kw
#5	(bubonic plague):ti,ab,kw
#6	(bacterial plague):ti,ab,kw
#7	(oriental plague):ti,ab,kw
#8	(yersinia pestis infection):ti,ab,kw
#9	(black death):ti,ab,kw
#10	(“black plague”):ti,ab,kw
#11	#1 OR #2 OR #3 OR #4 OR #5 OR #6 OR #7 OR #8 OR #9 OR #10
Intervention
#12	MeSH descriptor:[Plague Vaccine] explode all trees
#13	(“plague vaccine”):ti,ab,kw
#14	(Plague Vaccines):ti,ab,kw
#15	(Plague Vaccinations):ti,ab,kw
#16	MeSH descriptor:[Vaccines] explode all trees
#17	MeSH descriptor:[Vaccination] explode all trees
#18	(“vaccine”):ti,ab,kw
#19	(“vaccination”):ti,ab,kw
#20	#12 OR #13 OR #14 OR #15 OR #16 OR #17 OR #18 OR #19
RCT
#21	("randomized controlled trial" OR "controlled clinical trial"):pt
#22	(randomized OR placebo OR randomly OR trial OR groups):ti,ab,kw
#23	#21 OR #22
Exclusion terms
#24	MeSH descriptor: [Animals] explode all trees
#25	MeSH descriptor: [Humans] explode all trees
#26	#24 NOT #25
#27	("Comment" OR "Letter" OR "Editorial" OR "Case Reports" OR "Clinical Trial Phase I"):pt
#28	(case NEXT stud* OR case NEXT report* OR "case series" OR case NEXT histor*):ti
#29	#27 OR #28
Total
#30	#11 AND #20 AND #23
#31	#30 NOT (#26 OR #29)