FRESNO, Calif. --A school nurse from Dinuba returned to work Tuesday after helping out with earthquake relief efforts in Haiti. Rhonda Ysusi, a Registered Nurse with Dinuba Unified, used her spring break vacation to do medical missionary work. Ysusi said nothing could have prepared her for what she saw in the earthquake ravaged country. "There's a lot of illness and sickness there. One of the leading causes of death in children right now is pneumonia. And we did see some children that we referred to hospitals that had fevers, and pneumonia, I'm sure, listening to their lungs," said Ysusi.