tokens: In comparison , 15 neural - tube defects were found among 14,792 deliveries ( 0.10 % ) in which the mother was taking any non - dolutegravir ART at conception , 3 among 7959 ( 0.04 % ) in which the mother was taking efavirenz at conception , 1 among 3840 ( 0.03 % ) in which the mother started dolutegravir treatment during pregnancy , and 70 among 89,372 ( 0.08 % ) in HIV - uninfected mothers .