Pfizer, BioNTech Halt Large US COVID-19 Vaccine Trial Over Slow Enrollment
Pfizer and BioNTech have halted enrollment in a large U.S. trial for their updated COVID-19 vaccine due to slow recruitment of healthy adults aged 50-64, preventing the generation of relevant post-marketing data. Moderna is reportedly facing similar issues with its own vaccine trial in the same age group, which follows new FDA requirements for placebo-controlled data. The challenges highlight difficulties in clinical trial enrollment and a potential dip in interest in COVID-19 vaccines in the U.S. market.
https://www.biospace.com/drug-development/pfizer-biontech-halt-large-us-covid-19-vaccine-trial-over-slow-enrollment