at least 80% of children affected by ds are born from mothers under the age of 35, despite women over the age of 35 being deemed to be at higher risk of having a child with ds.

babalelwa kumaphesenti angama80 abantwana abane sifo seds abazalwa ngabazali abaneminyaka engama35, ngaphandle kwalokho abesi fazane abathola abantwana beneminyaka engama35 basengcupheni yokuthi abantwana babo babe neds.
