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Find 203 clinical trials for covid-19 near Philadelphia, Pennsylvania. Connect with research centers in your area.
Showing 201-203 of 203 trials
NCT01249625
Despite widespread use of respiratory protective equipment in the U.S. healthcare workplace, there is very little clinical evidence that respirators prevent healthcare personnel (HCP) from airborne infectious diseases. Scientific investigation of this issue has been quite complicated, primarily because the use of respirators has become "the standard of care" for protection against airborne diseases in some instances, even without sufficient evidence to support their use. The key question remains: How well do respirators prevent airborne infectious diseases? The answer to this important question has important medical, public health, political and economic implications.
NCT04540185
In this randomized double blind Phase 3 clinical trial we will study the efficacy and safety of oral polio vaccine with and without NA-831 versus placebo.