Effect of ultra-violet irradiation of classrooms on spread of mumps and chickenpox in large rural central schools.
D002644:Chickenpox / Q000517:prevention & control*; D006801:Humans; D009107:Mumps; D010309:Parotitis / Q000517:prevention & control*; D012424:Rural Population; D012574:Schools; D032413:Viola; D014965:X-Rays
CHICKENPOX/prevention and control; PAROTITIS/prevention and control; ROENTGEN RAYS/effects