Astronomy is a science that studies celestial objects such as the Sun, planets, moons, stars, nebulae & galaxies.
Definition of Ebola - an infectious and frequently fatal disease marked by fever and severe internal bleeding, spread through contact with infected body Definition of Ebola - an infectious and frequently fatal disease marked by fever and severe internal bleeding, spread through contact with infected body
Ebola virus disease: an overview. Ebola virus disease is a serious illness that originated in Africa, where there is currently an outbreak. But for people living in countries outside Africa, it continues to be a very low threat. The current outbreak of the Ebola virus mainly affects three countries in West Africa: Guinea, Liberia and Sierra Leone.