Humans fall ill after Malawi relocates hundreds of elephants

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Nkhotakhota, – The relocation of hundreds of to ’s largest wildlife reserve was meant to be a sign of hope and renewal in this southern African nation. Then nearby residents began falling ill.

The cause of the headaches, weakness and pain were trypanosomes, tiny parasites spread by the bite of the tsetste fly — a companion of the elephants. Trypanosomiasis, or sleeping sickness, is the result.

An elephant is lifted by a crane in an upside-down position in Lilongwe, Malawi, in the first step of an assisted migration of 500 of the animals. File picture: Tsvangirayi Mukwazhi/AP

Local families described the toll the disease can take.

“I feel too weak,” said Chiomba Njati, who was still recovering after a week in the hospital. He said he was bitten while farming near the wildlife reserve. “I cannot even carry a hoe and farm. The home is lacking food and other important things because it is my wife doing everything on her own. This is so worrying.”

Authorities said the Nkhotakota wildlife reserve has seen a surge in tsetse fly numbers since around 2015 when the elephants and other game animals were reintroduced.

The local hospital said it did not have a number of sleeping sickness cases. One community resident, Group Village Ngondo, recalled at least five deaths from the disease.

The World Health Organization says sleeping sickness is endemic in 36 countries in sub-Saharan Africa but cases have been dropping. Last year just under 1,000 cases were recorded, a new low. The majority of cases are reported in Congo.

The disease is “notoriously difficult to treat” with drugs and easier to treat when caught early, WHO says. The health agency says it is usually fatal when untreated as the parasite moves into the central nervous system and eventually can cause seizures and coma.

Dr. Janelisa Misaya, a Malawi College of Medicine principal investigator, underscored the need to control the tsetse fly population.

“One tsetse can actually infect a lot of people at once,” she said. “So we don’t want to take chances.”

Some villagers expressed concern about the reintroduction of wildlife and the enlargement of the nearby reserve.

The African Parks field operations manager for the reserve, David Robertson, acknowledged that the reintroduction of animals in 2015 led to an increase in tsetse flies.

“It is a bit ironic because it is a negative symptom of the success we are having,” he said. “By increasing animal numbers, one of the unfortunate consequences could be an increase in tsetse fly numbers. Even though they are a natural part of the system, they contribute to biodiversity.”

The tsetse flies are something the parks workers need to manage differently, Robertson said. “We don’t want to have neighboring communities or tourists to the park having an unpleasant experience or dangerous experience though contact with tsetse flies so we will do our best to manage that in the future.”

 

Dead tsetse flies on display in a laboratory. In the southern African nation of Malawi Trypanosomiasis, or sleeping sickness has caused residents to become ill from tiny parasites which are spread by the bite of the tsetse fly. Picture: Sayyid Azim/AP

To address the problem, African Parks in collaboration with Malawi’s government has introduced pesticide-impregnated targets and traps that attract the flies. So far 600 have been placed in the wildlife reserve.

They are placed near the edge of thickets in areas that will receive morning and evening light but are shaded from the most intense sunlight during midday hours. The area surrounding each is slashed and cleared with hoes to produce a firebreak to protect it from occasional wildfires.

Controlling the flies and animal populations are ways to help fight the disease. More assertive diagnosis and treatment are others.

Local medical personnel are receiving more training to screen for and diagnose trypanosomiasis.

The community has benefited from African Parks’ support for screening efforts, said Tenson Mkumbwa, deputy lab manager at the Nkhotakota District Hospital.

“This leads to early diagnosis and treatment,” he said.

This article was first published by IOL News on 30 October 2019.


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george mira

An alternative view of the4 Tsetse and Trypanosomiasis, is worthy of mention. Until the 1960s in Africa, these organisms allowed healthy wildlife populations to exist almost solely due to tsetse fly areas preventing human overoccupation. In the 60s, the first spray-killing programs were instituted, and slowly the African human population filled up the spaces formerly occupied by those immense numbers of wildlife. Africa now has over 15 TIMES the human population it did in about 1920, and of course, the large fauna, from elephant, rhino, hippo, giraffe, through predators from lion , leopard, etc. have now become nearly everywhere endangered,… Read more »

Arlene Steinberg
Arlene Steinberg

Thank you for the outstanding education about this. You prove the point that nature literally polices itself and maintains balance as a perfectly operating eco-system, and it is WE HUMANS who have thrown everything out of kilter with our own excessive population and intrusion into too many areas that should be left for other species that in themselves, help maintain balance.