As Covid-19 captures global headlines, the World Health Organisation (WHO) warned on Tuesday that the world needs nearly six million nurses.

The UN’s health agency along with partners Nursing Now and the International Council of Nurses (ICN) underscored in a report the crucial role played by nurses, who make up more than half of all health workers worldwide.

“Nurses are the backbone of any health system,” WHO chief Tedros Adhanom Ghebreyesus said in a statement.

“Today, many nurses find themselves on the frontline in the battle against Covid-19,” he noted, adding that it was vital they “get the support they need to keep the world healthy”.

The report said that there are just under 28 million nurses on the planet. In the five years leading up to 2018, the number grew by 4.7 million.

“But this still leaves a global shortfall of 5.9 million,” the WHO said, pointing out that the greatest gaps were in poorer countries in Africa, southeast Asia, the Middle East and parts of South America.

The report urged countries to identify gaps in their nursing workforce and invest in nursing education, jobs and leadership.

ICN chief executive Howard Catton told a virtual briefing that infection rates, medication errors and mortality rates “are all higher where there are too few nurses”.

In fighting the pandemic, Mary Watkins, who co-chaired the report for Nursing Now, called for urgent investment in virus tests for healthcare workers.

“We have a very high proportion of healthcare workers not going to work because they’re afraid that they’ve been infected and that they can’t prove that they have not got the infection – or that they’ve had it, and they’re over it,” she said.