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Long worml new guinea12/11/2022 'Dogs are now the key impediment to eradicating this dreadful human disease,' he said. Professor Robbie McDonald, of Exeter's Environment and Sustainability Institute, led the study. Much of the fish eaten by the dogs – usually guts or smaller fish – was discarded by humans fishing on the river and its lagoons. They tracked hundreds of dogs with satellite tags to analyse movements, and revealed dog diets throughout the year using forensic stable isotope analysis of dog whiskers. Researchers from the University of Exeter worked for a year in several of the worst-affected villages along the River Chari in Chad. Targeted surveillance showed that in 2020, 93 per cent of Guinea worms detected worldwide were in dogs in Chad, in central Africa. The parasite causes disability and trauma in some of the world's poorest communities in Chad, Ethiopia, Mali and South Sudan. This means the pets maintain the parasite's life-cycle and humans can still catch the disease. Now it has emerged that these efforts are being hampered by dogs eating fish that carry the parasite larvae. The World Health Organization (WHO) had set a target of wiping it out by the end of last year, which would have made it only the second human disease to be eradicated, but health chiefs have since pushed that date to 2030.
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