No US Confirmation Of Lifting Ban On Export Of Vaccine Raw Materials Covid-19 vaccine - representative image (Twitter) US President Joe Biden's spokesperson Jen Psaki has refused to say if the US will allow the export of Covid-19 vaccine raw materials to India, a shortage that could impact global supply or set a timeline for dealing with the requests for relaxing the vaccine patent rights. At her briefing in Washington on Monday, she sidestepped a question about reports that at a virtual meeting Secretary of State Anthony Blinken and External Affairs Minister S. Jaishankar the US had indicated that it was considering the request for lifting the ban on the raw material.