Pandemic-related disruptions caused tens of thousands more malaria deaths in 2020, the World Health Organization (WHO) has said, but added that urgent action had averted a far worse scenario.
In a fresh report, the UN health agency found that Covid-19 had reversed progress against the mosquito-borne disease, which was already plateauing before the pandemic struck.
There were an estimated 241 million malaria cases worldwide in 2020 -- 14 million more than a year earlier -- and the once-rapidly-falling death toll swelled to 627,000 last year, jumping 69,000 from 2019.
Approximately two thirds of those additional deaths were linked to disruptions in the provision of malaria prevention, diagnosis and treatment during the pandemic, the WHO said.
But it stressed that the situation could have been far worse.
The UN agency pointed to its projection early in the pandemic that the service disruptions could cause malaria deaths to double in 2020.
"Thanks to the hard work of public health agencies in malaria-affected countries, the worst projections of Covid's impact have not come to pass," WHO chief Tedros Adhanom Ghebreyesus said in a statement.
"Now, we need to harness that same energy and commitment to reverse the setbacks caused by the pandemic and step up the pace of progress against this disease."
Since the turn of the century, the world has made steady progress against malaria, with annual cases falling 27 percent by 2017 and deaths plunging by over 50 percent.
Worse in sub-Saharan Africa
But the numbers stalled in the years prior to the pandemic.
And the situation worsened in sub-Saharan Africa, where 95 percent of all malaria cases and 96 percent of all deaths occur, and where around 80 percent of all deaths are among children under five.
The WHO report showed that 24 countries had registered increased malaria deaths since 2015 -- the baseline year for the agency's global malaria strategy.
In the 11 countries with the highest malaria burden worldwide, cases swelled from 150 million in 2015 to 163 million in 2020, while deaths grew from 39,000 to 444,600 over the same period, it said.
'Potential malaria crisis'
"I think we are on the verge of a potential malaria crisis," Dr Pedro Alonso, head of WHO's Global Malaria Programme, told reporters.
Not only are we not getting closer to elimination or eradication globally, he warned, "but the problem (is) becoming worse in a substantial number of parts of Africa."
But a number of countries are making progress.
Between 2000 and 2020, 23 countries managed to go three consecutive years with no local transmission, and so far in 2021, China and El Salvador were certified malaria-free.
Another positive step is the development of the first malaria vaccine.
Malaria vaccine drive to begin across Africa with WHO support
Last week, the global vaccine alliance, Gavi, said it had approved nearly $156 million in funding to roll out the jabs to children in sub-Saharan Africa.