Amish lethal microcephaly occurs in approximately 1 in 500 newborns in the Old Order Amish population of Pennsylvania. It has not been found outside this population.
How many people are affected by Amish lethal microcephaly ?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: How many people are affected by Amish lethal microcephaly ? [/INST] \n Amish lethal microcephaly occurs in approximately 1 in 500 newborns in the Old Order Amish population of Pennsylvania. It has not been found outside this population.</s>