Coronavirus live news: global cases near 22m as Wall Street record defies economic gloom
US and Brazil continue to drive worldwide count as deaths pass 775,000; S&P500 index closes at all-time high; European restrictions tighten
- Global report: France tightens mask rules as cases rise in Europe
- Australia does deal to secure potential Oxford vaccine for free
- UK: Oldham feared to be on brink of catastrophic lockdown
- Australia coronavirus updates - live
The US postmaster general has tried to take the heat out of the growing anger about possible disruption to mail-in voting in November’s election by announcing that all proposed operational changes to the postal system will be delayed until after the vote.
Related: Pelosi dismisses postmaster general's delay to USPS changes as 'insufficient' – live
Testing and contact tracing are crucial measures for slowing the spread of Covid-19, but are not enough on their own to contain the disease, according to a new study by researchers at Imperial College, London.
The work published on Wednesday in the The Lancet Infectious Diseases says that test-and-trace can reduce the virus’ reproduction rate, or R number, by 26%, AFP reports.
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