Weekly releases (1997–2007) - Volume 7, Issue 32, 07 August 2003

A new, revised statutory notification system came into force in Norway on 1 July 2003 (1). This is the third major revision since the Norwegian Surveillance System for Communicable Diseases (Meldingssystem for smittsomme sykdommer, MSIS) was implemented nationwide in 1975.

Dengue viruses (DENV-1, DENV-2, DENV-3, and DENV-4) are the most common cause of arboviral disease in the world and are mainly transmitted by bites of the mosquito vector Aedes aegypti.