The Joe Biden administration on Thursday denied that it has imposed any kind of restrictions on export of Covid-19 vaccines. The denial came amidst reports that European Union has been told by the US that they cannot expect any AstraZeneca shipments anytime soon. Vaccine manufacturers in the United States are free to export their products while also fulfilling the terms of contracts with the United States, the White House said on Thursday. There are supplies that they are producing for the United States but they can also work with other countries, she said in response to a question, Press Secretary Jen Psaki added.