Trump says coronavirus vaccine could be ready in a month

US President Donald Trump said Tuesday that a coronavirus vaccine may be available within a month -- an acceleration of even his own optimistic predictions -- but added that the pandemic could go away by itself.

"We're very close to having a vaccine," he told a town hall question-and-answer session with voters in Pennsylvania aired on ABC News.

"We're within weeks of getting it you know -- could be three weeks, four weeks," he said.