Table 1.

Example of selected databases and their applied search syntax

Database	Search Syntax	N
PubMed	(“Natural Disaster*” OR “Natural Hazard*” OR earthquak* OR Flood* OR Storm* OR Drought* OR Hurricane* OR Tsunam* OR Tornado* OR Cyclone* OR Cyclones* OR Wildfir*) AND (“COVID-19” “COVID 19” COVID19 OR Coronavirus* OR corona) NOT “cytokine storm*” AND (“Health system*” OR health sector)	296
Scopus	(ALL (“Natural Disaster” AND “Covid 19”) OR ALL (“Natural Hazard” AND “Covid 19”) OR ALL (“Natural Disasters” AND “Covid 19”) OR ALL (“Natural Hazards” AND “Covid 19”) OR ALL (earthquake AND “Covid 19”) OR ALL (earthquakes AND “Covid 19”) OR ALL (Flood AND “Covid 19”) OR ALL (Floods AND Covid19) OR ALL (Flash Flood AND Covid19) OR ALL (Flash Floods AND Covid19) OR ALL (Drought AND “Covid 19”) OR ALL (Storm AND “Covid 19”) OR ALL (Storms AND “Covid 19”) OR ALL (“Surge Storm” AND “Covid 19”) OR ALL (Surge Storms AND “Covid 19”) OR ALL (Landslide AND “Covid 19”) OR ALL (Landslides AND “Covid 19”) OR ALL (Fire AND “Covid 19”) OR ALL (Fires AND “Covid 19”) OR ALL (Wildfire AND “Covid 19”) OR ALL (Wildfires AND “Covid 19”) OR ALL (Hurricane AND “Covid 19”) OR ALL (Hurricanes AND “Covid 19”) OR ALL (Tornado AND “Covid 19”) OR ALL (Tornados AND “Covid 19”) OR ALL (Tsunami AND “Covid 19”) OR ALL (Tsunamis AND “Covid 19”) OR ALL (Cyclone AND “Covid 19”) OR ALL (Cyclones AND “Covid 19”) OR ALL (“Natural Disaster” AND “Covid 19 Coronavirus”) OR ALL (“Natural Hazard” AND “Covid 19 Coronavirus”) OR ALL (“Natural Disasters” AND “Covid 19 Coronavirus”) OR ALL (“Natural Hazards” AND “Covid 19 Coronavirus”) OR ALL (Earthquake AND “Covid 19 Coronavirus”) OR ALL (Earthquakes AND “Covid 19 Coronavirus”) OR ALL (Flood AND “Covid 19 Coronavirus”) OR ALL (Floods AND “Covid 19 Coronavirus”) OR ALL (Flash Flood AND “Covid 19 Coronavirus”) OR ALL (Flash Floods AND “Covid 19 Coronavirus”) OR ALL (Drought AND “Covid 19 Coronavirus”) OR ALL (Storm AND “Covid 19 Coronavirus”) OR ALL (Storms AND “Covid 19 Coronavirus”) OR ALL (“Surge Storm” AND “Covid 19 Coronavirus”) OR ALL (Surge Storms AND “Covid 19 Coronavirus”) OR ALL (Landslide AND “Covid 19 Coronavirus”) OR ALL (Landslides AND “Covid 19 Coronavirus”) OR ALL (Fire AND “Covid 19 Coronavirus”) OR ALL (Fires AND “Covid 19 Coronavirus”) OR ALL (Wildfire AND “Covid 19 Coronavirus”) OR ALL (Wildfires AND “Covid 19 Coronavirus”) OR ALL (Hurricane AND “Covid 19 Coronavirus”) OR ALL (Hurricanes AND “Covid 19 Coronavirus”) OR ALL (Tornado AND “Covid 19 Coronavirus”) OR ALL (Tornados AND “Covid 19 Coronavirus”) OR ALL (Tsunami AND “Covid 19 Coronavirus”) OR ALL (Tsunamis AND “Covid 19 Coronavirus”) OR ALL (Cyclone AND “Covid 19 Coronavirus”) OR ALL (Cyclones AND “Covid 19 Coronavirus”)) AND (ALL (Health) OR ALL (Healthcare) OR ALL (“Health system”) OR ALL (“Health sector”) OR ALL (“public health sector”) OR ALL (“health service”) OR ALL (“healthcare service”)) AND (ALL (Preparedness) OR ALL (“Disaster Preparedness”) OR ALL (Crisis Preparedness) OR ALL (“Crisis Management”) OR ALL (“Crises Management”) OR ALL (“Risk Management”) OR ALL (“Disaster Management”) OR ALL (“Risk Reduction”))	560
Web of Sciences	(TS = (“Natural Disaster” AND “Covid 19”) OR TS = (“Natural Hazard” AND “Covid 19”) OR TS = (“Natural Disasters” AND “Covid 19”) OR TS = (“Natural Hazards” AND “Covid 19”) OR TS = (earthquake AND “Covid 19”) OR TS = (earthquakes AND “Covid 19”) OR TS = (Flood AND “Covid 19”) OR TS = (Floods AND Covid19) OR TS = (Flash Flood AND Covid19) OR TS = (Flash Floods AND Covid19) OR TS = (Drought AND “Covid 19”) OR TS = (Storm AND “Covid 19”) OR TS = (Storms AND “Covid 19”) OR TS = (“Surge Storm” AND “Covid 19”) OR TS = (Surge Storms AND “Covid 19”) OR TS = (Landslide AND “Covid 19”) OR TS = (Landslides AND “Covid 19”) OR TS = (Fire AND “Covid 19”) OR TS = (Fires AND “Covid 19”) OR TS = (Wildfire AND “Covid 19”) OR TS = (Wildfires AND “Covid 19”) OR TS = (Hurricane AND “Covid 19”) OR TS = (Hurricanes AND “Covid 19”) OR TS = (Tornado AND “Covid 19”) OR TS = (Tornados AND “Covid 19”) OR TS = (Tsunami AND “Covid 19”) OR TS = (Tsunamis AND “Covid 19”) OR TS = (Cyclone AND “Covid 19”) OR TS = (Cyclones AND “Covid 19”) OR TS = (“Natural Disaster” AND “Covid 19 Coronavirus”) OR TS = (“Natural Hazard” AND “Covid 19 Coronavirus”) OR TS = (“Natural Disasters” AND “Covid 19 Coronavirus”) OR TS = (“Natural Hazards” AND “Covid 19 Coronavirus”) OR TS = (Earthquake AND “Covid 19 Coronavirus”) OR TS = (Earthquakes AND “Covid 19 Coronavirus”) OR TS = (Flood AND “Covid 19 Coronavirus”) OR TS = (Floods AND “Covid 19 Coronavirus”) OR TS = (Flash Flood AND “Covid 19 Coronavirus”) OR TS = (Flash Floods AND “Covid 19 Coronavirus”) OR TS = (Drought AND “Covid 19 Coronavirus”) OR TS = (Storm AND “Covid 19 Coronavirus”) OR TS = (Storms AND “Covid 19 Coronavirus”) OR TS = (“Surge Storm” AND “Covid 19 Coronavirus”) OR TS = (Surge Storms AND “Covid 19 Coronavirus”) OR TS = (Landslide AND “Covid 19 Coronavirus”) OR TS = (Landslides AND “Covid 19 Coronavirus”) OR TS = (Fire AND “Covid 19 Coronavirus”) OR TS = (Fires AND “Covid 19 Coronavirus”) OR TS = (Wildfire AND “Covid 19 Coronavirus”) OR TS = (Wildfires AND “Covid 19 Coronavirus”) OR TS = (Hurricane AND “Covid 19 Coronavirus”) OR TS = (Hurricanes AND “Covid 19 Coronavirus”) OR TS = (Tornado AND “Covid 19 Coronavirus”) OR TS = (Tornados AND “Covid 19 Coronavirus”) OR TS = (Tsunami AND “Covid 19 Coronavirus”) OR TS = (Tsunamis AND “Covid 19 Coronavirus”) OR TS = (Cyclone AND “Covid 19 Coronavirus”) OR TS = (Cyclones AND “Covid 19 Coronavirus”)) AND (TS = (Health) OR TS = (Healthcare) OR TS = (“Health system”) OR TS = (“Health sector”) OR TS = (“public health sector”) OR TS = (“health service”) OR TS = (“healthcare service”)) AND (TS = (Preparedness) OR TS = (“Disaster Preparedness”) OR TS = (Crisis Preparedness) OR TS = (“Crisis Management”) OR TS = (“Crises Management”) OR TS = (“Risk Management”) OR TS = (“Disaster Management”) OR TS = (“Risk Reduction”))	4