Key developments in the global coronavirus outbreak today include:

Global number of confirmed cases passes 3m

According to researchers at Johns Hopkins University, at least 3,034,801 people worldwide have been infected since the outbreak began, while at least 210,551 have lost their lives.

The figures are likely to be significant underestimates due to suspected underreporting and differing statistical and testing regimes around the world.

Nigeria to ease restrictions

Nigeria will begin a “phased and gradual” easing of more than four weeks of lockdown at the beginning of next week, its president, Muhammadu Buhari, has said. Lagos and Ogun states, and the federal capital territory of Abuja, entered lockdown to halt the spread of the virus on 30 March.

Trump’s WHO funding block to be investigated

The US House of Representatives’ foreign affairs committee launches an investigation into Donald Trump’s decision to block World Health Organization funding, giving the state department a week to provide relevant information.

Writing to the secretary of state, Mike Pompeo, the committee’s chairman says he would support reform of the “imperfect” UN health agency, but cutting its funding “while the world confronts the Covid-19 tragedy is not the answer”.

South Korea sees no sign of Kim virus infection

Officials say they have detected no unusual movements in North Korea and caution against reports that Pyongyang’s leader, Kim Jong-un, may be ill or is being isolated because of coronavirus concerns.

Ireland unlikely to lift lockdown just yet

The national public health emergency team will not recommend easing its lockdown next Tuesday unless progress on the spread and impact of the virus is made this week, the chief medical officer, Tony Holohan, says.

Some countries have announced such measures and Holohan raised hopes Ireland would join them next week when he said on 16 April the country had contained the first wave of the outbreak.

Argentina introduces stringent flight restrictions

The country bans all commercial flight ticket sales until September; one of the toughest such measures in the world. While its borders have been closed since March, the new decree goes further by banning the sale and purchase of commercial flights to, from and within Argentina. Industry figures claim it will put too much strain on airlines and airports.

Pandemic delays vaccines for 13m people

Postponements to 14 vaccination campaigns because of the pandemic will affect more than 13m people, the World Health Organization says.

The WHO director general, Dr Tedros Adhanom Ghebreyesus, says vaccination drives against polio, measles, cholera, human papillomavirus, yellow fever and meningitis have not gone ahead.

UK hospital deaths rise by 360

The health secretary, Matt Hancock, says 21,092 have now died in UK hospitals, as he announces 360 more deaths at the government’s daily briefing. The figure does not include deaths in other settings, which some estimates suggest will account for a significant proportion of the total.