Four more mumps cases were reported today by the state Department of Health, bringing the total this year to 55.

All were Oahu children, and two of them were linked to an earlier case in an adult, the department said. None required hospitalization.

The ailment is easily spread through coughing, sneezing or by touch, including sharing cups or utensils. The department recommends people get the MMR vaccine, which protects against mumps, measles and rubella, also called German measles.