Answer:

mumps

Answer	Crossword Clue
MUMPS	Not-so-swell swelling
MUMPS	Malady with swelling
MUMPS	Illness that is a swell time?

MUMPS	Swelling malady
MUMPS	Childhood disease
MUMPS	Childhood ailment, typically
MUMPS	Childhood malady
MUMPS	Disease generally vaccinated against with measles and rubella
MUMPS	Infectious disease.
MUMPS	Pediatrician's problem.
MUMPS	Parotitis

MUMPS	Kind of vaccine
MUMPS	Doctors call it parotitis
MUMPS	Common childhood illness, once
MUMPS	Swollen glands cause
MUMPS	Infectious disease
MUMPS	Childhood illness
MUMPS	Swell reason to stay in bed?
MUMPS	One target of the MMR vaccine

MUMPS	Childhood ailment
MUMPS	Vaccination target
MUMPS	One target of a childhood vaccine