Kennedy later said the purpose of his trip had nothing to do with vaccines. US embassy and UN staff at the time said otherwise, emails show

Over two days of questioning during his Senate confirmation hearings last year, Robert F Kennedy Jr repeated the same answer.

He said the closely scrutinized trip he took to Samoa in 2019, which came ahead of a devastating measles outbreak, had “nothing to do with vaccines”.

Documents obtained by the Guardian and the Associated Press undermine that testimony. Emails sent by staff at the US embassy and the United Nations provide, for the first time, an inside look at how Kennedy’s trip came about and include contemporaneous accounts suggesting his concerns about vaccine safety motivated the visit.

The documents have prompted concerns from at least one US senator that the lawyer and activist now leading America’s health policy lied to Congress over the visit. Samoan officials later said Kennedy’s trip bolstered the credibility of anti-vaccine activists ahead of the measles outbreak that sickened thousands and killed 83 people, mostly children under age five.