“The people of Zimbabwe are slowly getting to a point of suffering a man-made starvation,” she told a news conference in Harare, adding that eight million people would be affected by the end of the year.

“Today, Zimbabwe counts amongst the four highest food insecure states,” she said after an 11-day tour, adding that poor harvests were compounded by 490% hyperinflation.

“A staggering 5.5 million people are currently facing food insecurity” in rural areas due to a drought that has affected harvests, she said.

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Another 2.2 million people in urban areas also faced food shortages and lacked access to minimum public services, including health and safe water.

“By the end of this year… the food security situation is expected to worsen with an estimated eight million people requiring urgent action to reduce food consumption gaps and save livelihoods,” she said, describing the numbers as “shocking”.

Zimbabwe is in the grips of an entrenched economic crisis, pervasive corruption, poverty and a crumbling health system.

The economy, crippled by decades of mismanagement under former president Robert Mugabe, has failed to rebound under Emmerson Mnangagwa, who took over following a military-led coup two years ago.

She warned that food insecurity heightened “the risks of civil unrest and insecurity”.

“I urgently call on the government and the international community to come together to put an end to this spiralling crisis before it morphs into a full-blown social unrest,” she said.