The Ebola virus has been wreaking havoc in West Africa of late. According to CBC, an outbreak of the virus that began in Guinea last year has spread to Liberia, Sierra Leone and Nigeria and has killed at least 1,500 people so far. Now, a separate outbreak in the Democratic Republic of the Congo (DRC) has led Botswana to close its borders travelers from that country, halting the transport of copper exports in the process.According to Bloomberg, Botswana's Department of Immigration and Citizenship issued a directive on August 25 to bar entry to anyone travelling from the DRC — including trucks carrying copper exports. The DRC ranked sixth in the world in terms of copper production last year, and was the top producer of cobalt globally. The country's output gained 14 percent in the first quarter of the year to reach 230,000 metric tons, as per figures cited by Bloomberg. The Wall Street Journal notes that the strain of the disease affecting the DRC is different from the one in West Africa. Furthermore, although 13 people have died so far from Ebola-like symptoms, just two of the dead have tested positive for the virus. Still, health officials are worried about a rapid spread of the disease, and its neighbor was quick to act. A Botswana customs official told the Journal by phone, "[w]e are not clearing all vehicles from Congo until further notice. We have advised them to use alternative routes." Other countries in the area have not yet enacted such travel bans. Transportation alternatives Botswana does not border the DRC, but the closure is still affecting shipments for copper miners operating in the country who typically transport their production by road from the land locked nation to South Africa, according to the Journal.