The developers of Russia's Sputnik V coronavirus vaccine yesterday criticised Brazil's refusal to import the jab as politically motivated.

Brazilian health regulator Anvisa on Monday denied requests from several states to receive batches of Sputnik V, saying it did not have the data needed to verify the jab's safety and efficacy.

"Anvisa's delays in approving Sputnik V are unfortunately of a political nature and have nothing to do with access to information or science," the official Sputnik V Twitter account said.

It pointed to a recent US government report that said Washington had tried to persuade Brazil not to use Sputnik.

"The United States Department of Health, in its 2020 annual report several months ago, publicly stated that the United States health attache

'persuaded Brazil to reject the Russian vaccine against COVID-19,'" the account added.

Anvisa said its experts had flagged "uncertainties" about the jab, which has not yet been approved by the European Medicines Agency (EMA) or the US Food and Drug Administration (FDA).