The Japan Pharmaceutical Manufacturers Association on Friday opposed U.S. support for a temporary waiver of coronavirus vaccine patent rights held by pharmaceutical companies, saying such a move could exacerbate global shortages of vital components for vaccines and stoke anxiety about product quality.

Earlier this week, U.S. Trade Representative Katherine Tai said President Joe Biden's administration will support the idea of an intellectual property waiver to help expand global vaccine supplies as part of efforts to end the COVID-19 pandemic.

Such a waiver is being discussed at the World Trade Organization, with its chief Ngozi Okonjo-Iweala welcoming Washington's stance.