THERE is a "high risk of biological hazard" in Sudan's capital Khartoum after one of the warring parties seized a laboratory holding measles and cholera pathogens and other hazardous materials, the World Health Organization said. Speaking to reporters in Geneva via video link from Sudan, the WHO's representative in the country, Nima Saeed Abid, said technicians were unable to gain access to the National Public Health Laboratory to secure the materials. "This is the main concern: no accessibility to the lab technicians to go to the lab and safely contain the biological material and substances available," he said, declining to…