You might be wondering if the phrase "do not abort a fetus" is really an accurate translation. Here is what the scholar that did this translation has to say when asked that question:

I hope it’s an accurate translation, since it’s mine! The Greek literally says: “Do not murder a child who is in corruption” That means, a child who is still not completely formed. That it is referring to an unborn child is clear from what is said next “Nor kill a child once it has been born”