Who gets these mumps? I'm thinking immigrant children of parents who were never educated to get vaccinations. No can read or speak English. Kids with poor immune systems that can't produce antibodies even after being vaccinated. What can you do if you have kids in school? No worries if they were vaccinated. Keep going to school. For the rest of us, vaccinate for all diseases that are present in Hawaii. I always check what vaccinations I need whenever I travel to foreign destinations. I take insect  repellant, long sleeve shirts and pants, first aid kits, and all kinds of things a doctor would need to treat me. Remember Rambo? He had a needle and thread in his serrated Bowie knife.