In 2007, 4,147 cases of mumps were reported in Poland. The incidence 10.9 per 100,000 was lower compared to 2006 (39.6) and to the median incidence in 2001-2005 (188.5). The decrease of mumps incidence in 2007 is related to high coverage of routine two-dose immunisation against measles, mumps and rubella, maintained since its implementation in 2003. Children 5-9 year old were the most affected age group--82.1 per 100,000. Of 4,147 cases, 109 (2.63%) were hospitalized and no deaths attributed to mumps were reported.