In a sample of water from Bangladesh is a ums 300-Fold high concentration of the antibiotic metronidazole, which is also used in skin diseases, was found accordingly. Sites where antibiotics exceeded the safe levels were primarily in Bangladesh, Kenya, Ghana, Pakistan and Nigeria. A researcher involved in the study called the results "eye-opening and worrying".
The study also revealed high-risk sites typically adjacent to wastewater treatment systems, waste, or sewage dumps.
Risky levels of contamination were most frequently found in Asia and Africa, the team said, with sites in Bangladesh, Kenya, Ghana, Pakistan and Nigeria exceeding safe levels by the greatest degree.
The research, presented on Monday at a conference in Helsinki, shows that some of the world's best-known rivers, including the Thames, are contaminated with antibiotics classified as critically important for the treatment of serious infections.
Hundreds of the world's rivers are awash with "dangerous levels of antibiotics", the largest global study on the subject has found.More news: Canada ex-ministers who quit Trudeau gov't to run as independents
"It's quite scary and depressing", said Alistair Boxall, an environmental scientist at the University of York.
Overall, antibiotics concentration in the country's rivers was 170 times higher than the prescribed limit.
In dozens of locations, concentrations of the drugs - used to fight off bacterial infection in people and livestock - exceeded safety levels set by the AMR Industry Alliance, a grouping of more than 100 biotech and pharmaceutical companies.
Researchers from the University of York in the United Kingdom analyzed samples from rivers in 72 countries and found that antibiotics were present in 65% of them.
This resolution urges member states to strengthen infection prevention and control measures, including water sanitation and hygiene; enhance participation in global antimicrobial surveillance system; ensure prudent use of quality-assured antimicrobials; and support multisectoral annual self-assessment survey. Eight per cent of the sites tested in Europe were above safe limits.More news: Malaysia’s last male Sumatran rhino dies
Dealing with the logistical challenge of transporting 92 samples collected from various rivers around the world, researchers managed to fly back frozen samples to the University of York for testing. "Often on only a handful of antibiotics", Dr. John Wilkinson, Department of Environment and Geography, University of York, said.
"We've found that rivers - particularly in Africa and Asia - have antibiotics that will probably select for resistance and could be contributing to the antimicrobial crisis". We know very little about the scale of problem globally. "Our study helps fill this key knowledge gap with data being generated for countries that had never been monitored before", he said.
Many of them evolved from the natural environment.
"Solving the problem is going to be a mammoth challenge and will need investment in infrastructure for waste and wastewater treatment, tighter regulation and the cleaning up of already contaminated sites", Boxall said.More news: Mobile rolls out Samsung Galaxy A6 Android 9.0 Pie update