Eggs can pass to other people when they touch these surfaces and then touch their mouth. They take around 2 weeks to hatch. Children can get threadworms again after they've been treated for them if they get the eggs in their mouth.

Do Threadworms lay eggs every night?

The life cycle of threadworms

Threadworms live for about 5-6 weeks in the gut and then die. Before they die, the female worms lay tiny eggs around the back passage (anus). This tends to occur at night when you are warm and still in bed.

At what temperature do Threadworm eggs die?

They do not tolerate heat well, but can survive in low temperatures: at −8 degrees Celsius (18 °F), two-thirds of the eggs are still viable after 18 hours.