Coronavirus: India scientists warn on 'unrealistic' vaccine aims - BBC News
The country's medical council set a 15 August date for a Covid-19 vaccine for public use.
Millions of coronavirus tests are not being recorded, according to new data from the UK government.

Some 10.5 million tests have been "made available" since testing began, but only eight million of those have been "processed", the Department of Health and Social Care (DHSC) says.

More than two million tests, or about one in every five tests, are either not being sent back to laboratories or are being voided.

"Some members of the public may order a test and then for whatever reason they choose not to return that test," the prime minister's official spokesman told reporters.

He said he had not seen a "verified number on this" when the DHSC figures were put to him.

It comes as Downing Street defends its decision to stop publishing daily figures on the number of people being tested - in favour of the number of tests being done.

"DHSC will no longer publish the number of people tested daily anymore and will instead publish the number of daily tests processed," the PM's spokesman said.

"This is because the daily people tested statistic only counts new people being tested. For example, someone who is tested in February and then tested again this month will only be counted once."

The testing system in England has been criticised in recent days, after figures showed many people are still waiting more than 24 hours to get their results - despite the prime minister pledging to make this happen by the end of June.

And an investigation by BBC Panorama last week found thousands of contact tracers in England failed to trace a single contact in the first three weeks of the test and trace system.