Japan has put 1.6 million doses of the Moderna vaccine on hold after “foreign materials” were discovered in approximately 565,000 vials. The contamination stemmed from batches of Moderna’s COVID-19 vaccine produced by contract development manufacturing organization (CDMO) Rovi – also known as Laboratorios Farmacéuticos Rovi. The firms conducted an investigation after particulate matter was identified in vials of the vaccine distributed in Japan last week. “According to the root cause analysis report, conducted by Rovi, the most probable cause of…