A mystery illness in Congo has killed more than 50 people hours after they felt sick

KINSHASA, Congo — An unknown illness first discovered in three children who ate a bat has rapidly killed more than 50 people in northwestern Congo over the past five weeks, health experts say.

The interval between the onset of symptoms – which include fever, vomiting and internal bleeding – and death has been 48 hours in most cases and “that’s what’s really worrying,” said Serge Ngalebato, medical director of Bikoro Hospital, a regional monitoring center.

These “hemorrhagic fever” symptoms are commonly linked to known deadly viruses, such as Ebola, dengue, Marburg and yellow fever, but researchers have ruled these out based on tests of more than a dozen samples collected so far.

The latest disease outbreak in the Democratic Republic of Congo began on Jan. 21, with 419 cases recorded and 53 deaths.

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The outbreak began in the village of Boloko after three children ate a bat and died within 48 hours, the Africa office of the World Health Organization said Monday.

There have long been concerns about diseases jumping from animals to humans in places where wild animals are popularly eaten. The number of such outbreaks in Africa has surged by more than 60% in the last decade, the WHO said in 2022.

After the second outbreak of the mystery disease began in the village of Bomate on Feb. 9, samples from 13 cases were sent to the National Institute for Biomedical Research in Congo’s capital, Kinshasa, for testing, the WHO said. All samples were negative for common hemorrhagic fever diseases, although some tested positive for malaria.

Last year, another mystery flu-like illness that killed dozens of people in another part of Congo was determined likely to be malaria.