Jannah & Musa on Instagram: "What is Down syndrome? Down syndrome (Ds) is the most common genetic variation, occurring in approximately 1 in 700 births. It is NOT a disease, it is NOT contagious, no one suffers from Down syndrome and the another interesting thing it’s got nothing to do with cousin marriages. A person either has Ds or does not, as this was determined at conception. A person with Ds has a wide range of functional abilities, same as a person without Ds. There are 3 types of Down sy