Step:	Hits:	Strategy:
#1	32657	GW{protective clothing OR gown* OR coverall* OR protective layer* OR surgical toga* OR apron* OR smock* OR hazmat suit* OR (hazmat AND suit) OR glove* OR respiratory protective device* OR mask OR masks OR air purifying respirator* OR ‘PAPR’ OR ‘enhanced respiratory and contact precautions’ OR ‘E-RCP’ OR respiratory protection OR transparent panel* OR surgical mask* OR filtering face piece OR eye protective device* OR goggle* OR visor OR facial protective equipment OR safety glass* OR safety spectacles OR personal protective equipment OR ‘PPE’ OR protective equipment OR overshoe* OR shoe cover* OR rubber boot* OR head cover* OR face shield* OR surgical hood OR hood OR equipment contamination OR infection control OR gloving OR donning OR doffing}
#2	11286	GW{communicable disease* OR infectious disease* OR disease transmission OR infection control precautions OR human-to-human transmission OR parenteral transmission OR viral disease* OR bacterial infection* OR filovirus OR Ebolavirus OR hemorrhagic fever OR Ebola OR Marburg virus OR Lassa virus OR SARS virus OR severe acute respiratory syndrome virus OR ‘SARS’ OR ‘MERS’ OR respiratory infection* OR bioterrorism OR aerosol-generating procedure OR cross infection* OR bacterial contamination OR microbial contamination OR self-contamination OR decontamination OR surface decontamination OR skin decontamination}
#3	32599	GW{health personnel OR health care worker* OR health care personnel OR health personnel OR health-personnel OR health provider* OR health care provider* OR medical staff OR medical personnel OR medical professional OR medical worker* OR dental personnel OR dental staff OR dentist* OR dental assistant* OR nursing staff OR nurse* OR nursing assistant* OR nurses’ aides OR nurse midwife OR nurse midwives OR midwife OR midwives OR military-medical personnel OR physician* OR emergency medical services OR transporting patients OR patient transport OR ambulance* OR allied health personnel OR paramedic* OR paramedical personnel OR burial OR burial staff OR cleaning worker* OR cleaner work OR cleaner*}
#4	1250	#1 AND #2 AND #3
#5	742476	DC{OUBIB OR OUCISD OR OUHSEL OR OUISST OR OUNIOC OR OUNIOS OR OURILO}
#6	1103	#4 AND #5