A three-year-old boy hit by lightning in a Brampton, Ont., park continues to improve in hospital.The unnamed boy, five-year-old Kyus Caines and Kyus' 26-year-old mother Dulce Caines were struck Wednesday afternoon as they were leaving the park.Oral Caines says his son Kyus, who is in critical condition in hospital, bore the brunt of the lightning strike, while the other two were hit more indirectly.Kyus' grandmother told the Toronto Star the little boy was carrying a metal scooter over his shoulder at the time.A spokeswoman for the Hospital for Sick Children says the three-year-old boy's condition has been upgraded from serious to good.