Anvisa's refusal is linked to US influence, the Russian developers claimed The Russian manufacturers of the Sputnik V vaccine have filed a libel lawsuit in Brazil against the country's National Health Surveillance Agency (Anvisa) for “intentionally spreading false and inaccurate information” about the covid-19 inoculator after prohibiting its import, citing lack of data, the immunizer's Twitter account (@sputnikvaccine) reported. It added that Anvisa made their decision without having analyzed samples of the vaccine and without considering the official documents sent by the Gamaleya Institute on the absence of adenovirus. In its press conference today, Anvisa confirmed that it did not find any replicated adenovirus (RCA) in Sputnik V but was concerned about the Russian theoretical regulatory limit for that parameter.