i've learnt the hard way, my son was in hospital for 6 days, vomiting, headaches and general fatigue. luckily his pediatrician noticed that he was taking anti malaria tablets, he told me to stop it, after a week or so my son was back to normal. we thought he was going to die, he just cant stop vomiting.
we were just adviced to be extremely careful from dusk till dawn, apply insect repellent lotions every 3 hrs.