Background. While molluscum contagiosum is considered to be a frequent
ly encountered disease, few data on its incidence are known. Aim. The
objective of this study was to describe the incidence of molluscum con
tagiosum in Dutch general practice and to assess the importance of ven
eral molluscum contagiosum. Method. Data were taken from the national
survey of morbidity and interventions in general practice, drawn from
103 practices across the Netherlands, with a study population of 332 3
00. Results. The infection appeared to be common in childhood (cumulat
ive incidence 17% in those aged under 15 years); the adult, sexually t
ransmitted, form was rare. Incidence was higher between January and Ju
ne than between July and December. Cases were unequally divided betwee
n recording practices, which is thought to have been caused by the occ
urrence of small epidemics. Conclusion. The incidence of molluscum con
tagiosum in Dutch general practice was found to be 2.4 per 1000 person
years. Molluscum contagiosum should still be considered as a mainly p
aediatric disease.