Vladmir Putin announced the registration of the country's first coronavirus vaccine, also touted as world's first such vaccine against the virus, the World Health Organisation and Russian health authorities are now discussing the process for possible WHO prequalification for Covid-19 vaccine, a WHO spokesman said on Tuesday."We are in close contact with Russian health authorities and discussions are ongoing with respect to possible WHO prequalification of the vaccine, but again prequalification of any vaccine includes the rigorous review and assessment of all required safety and efficacy data," WHO spokesman Tarik Jasarevic told a U.N.