Trump clashes with Democrats over Covid-19 vaccine

US president Donald Trump during Monday’s White House news conference (Patrick Semansky/AP)

US president Donald Trump has clashed with the Democrats over measures to tackle the Covid-19 pandemic, accusing his rivals of “disparaging” for political gain a vaccine he has said could be available before the election.

He told a White House news conference: “It’s so dangerous for our country, what they say, but the vaccine will be very safe and very effective.”