Confidence votes 11. According to Wikipedia, the width of the Atlantic Ocean at its narrowest point is 2,848 kilometers (1,770 mi) between Brazil and Sierra Leone.
Paroxysmal nocturnal hemoglobinuria (PNH) may cause unpredictable episodes of acute red blood cell destruction (hemolysis). This occurs when a part of your immune system called complement attacks red blood cells that lack certain protective proteins.
PNH is a rare, acquired blood disease that affects just one to two people per million. Itâs caused by an acquired genetic mutation in a subset of the hematopoietic (blood-forming) stem cells. Hematopoietic stem cells are found mainly in the bone marrow.