exposure to radiation, infection, fetal growth restriction), hypoxia of the brain (thrombotic events, placental insufficiency, umbilical cord prolapse), birth trauma during labor and delivery, and complications around birth or during childhood.In Africa birth asphyxia, high bilirubin levels, and infections in newborns of the central nervous system are main cause. Many cases of CP in Africa could be prevented with better resources available. Preterm birth
Between 40% and 50% of all children who develop cerebral palsy were born prematurely. Most of these cases (75–90%) are believed to be due to issues that occur around the time of birth, often just after birth. Multiple-birth infants are also more likely than single-birth infants to have CP. They are also more likely to be born with a low birth weight.In those who are born with a weight between 1 kg and 1.5 kg CP occurs in 6%. Among those born before 28 weeks of gestation it occurs in 8%. Genetic factors are believed to play an important role in prematurity and cerebral palsy generally. While in those who are born between 34 and 37 weeks the risk is 0.4% (three times normal).
Through this reaction, iodine is used in redox titrations. Aqueous KI3, "Lugols solution", is used as a disinfectant and as an etchant for gold surfaces.