MRSA Definition and Symptoms. MRSA, methicillin-resistant staphylococcus aureus, is an infection that is caused by a certain strain of staph bacteria that is resistant to the commonly used antibiotics.
The Sahel (/sÉËhÉl/) is the ecoclimatic and biogeographic zone of transition in Africa between the Sahara Desert to the north and the Sudanian Savanna to the south. Having a semi-arid climate, it stretches across the south-central latitudes of Northern Africa between the Atlantic Ocean and the Red Sea.
North Africa is further divided into two smaller regions: Maghreb and the Sahara. The Maghreb region makes up northwestern Africa along the Atlas Mountains, including Western Sahara, Morocco, Algeria, Tunisia, and Libya. The countries in the Sahara region are Egypt, Sudan, and South Sudan.