Covid-19, which causes acute diarrhea in piglets may have the potential to spread to humans as well. The study also suggests that the deadly virus could "negatively impact the global economy and human health."The researchers, including those from the University of North Carolina (UNC) at Chapel Hill in America said the coronavirus strain, which is known as swine acute diarrhea syndrome coronavirus (SADS-CoV), has emerged from bats and has infected herds of pigs throughout China since it was first discovered four years ago in 2016.The researchers said outbreaks of such an illness have the potential to wreak economic havoc in many countries across the world that rely on the pork industry.Potential threats from swine coronavirusThe scientists.