Almost 300,000 new infections on Friday, led by US, Brazil and India; Boris Johnson warns of second UK lockdown; Victoria braced for more restrictions in Australia. Follow all the developments live The week Covid-19 roared back in Europe Fauci optimistic about having a vaccine this year 1.10am BST In Australia , the state of Victoria is mulling further restrictions to curb the rise in case numbers. The state has recorded more than 1,300 new infections over the past two days, including a record 732 cases from Thursday. The state government is yet to announce new measures, but options could include the lockdown of certain industries where outbreaks among workers have been common, such as abattoirs, or a wider shutdown of all but essential industries, modelled on steps taken in New Zealand . 1.03am BST Two major drug companies will supply the US government with 100m doses of an experimental coronavirus vaccine, the Trump administration said on Friday, as the nation’s top health a...