The CDC said Tuesday the Ebola outbreak may be over in Nigeria and Senegal, even though it continues to spread throughout other parts of West Africa. No new Ebola cases have been diagnosed in Nigeria since Aug. 28, and the only case in Senegal was documented Aug. 31. Nigeria had a markedly faster response to the Ebola virus than other African countries, quickly declaring it a health emergency when American diplomat Patrick Sawyer was infected. Sawyer passed away July 25, but Nigerian health officials traced not only his first-degree contacts, but second-degree ones as well. Despite this good news, health officials fear it will be very difficult to contain the virus as successfully in poorer countries like Liberia and Sierra Leone. The Ebola outbreak has killed 3,083 in Guinea, Sierra Leone, and Liberia alone.