COVID-19 is an emerging, rapidly evolving situation.
Get the latest public health information from CDC:

Get the latest research information from NIH:
Working… Menu
Open or close the search fields display
4108 Studies found for: subjects AND Double-blind AND Texas

A similar map is available for all studies in

Click on the map below to show a more detailed map (when available) or search for studies (when map not available).

Map Legend
Region Name Number of Studies
World [map] 4,108
North America 4,095
Canada 1,355 [studies]
Alberta 564 [studies]
British Columbia 603 [studies]
Manitoba 280 [studies]
New Brunswick 112 [studies]
Newfoundland and Labrador 186 [studies]
Nova Scotia 235 [studies]
Ontario 1,106 [studies]
Prince Edward Island 31 [studies]
Quebec 870 [studies]
Saskatchewan 131 [studies]

Click on a [map] link to show a map of that region.

Click on a [studies] link to search within your current results for studies in that region. Use the back button to return to this list and try another region.

Studies with no locations are not included in the counts or on the map.

Studies with multiple locations are included in each region containing locations.