Johnson & Johnson has temporarily halted its Covid-19 vaccine trial because one of its participants had become sick, the company said. "We have temporarily paused further dosing in all our Covid-19 vaccine candidate clinical trials, including the Phase 3 ENSEMBLE trial, due to an unexplained illness in a study participant," the company said in a statement.
The pause means the enrolment system has been closed for the 60,000-patient clinical trial while the independent patient safety committee is convened.
It said that serious adverse events (SAEs), such as accidents or illnesses, are "an expected part of any clinical study, especially large studies." Company guidelines allow them to pause a study to determine if the SAE was related to the