In this review we briefly summarise virological and immunological aspe
cts of acute and persistent measles virus (MV) infections as found in
man and further investigated in animal models and tissue culture. Seve
ral mechanisms contributing to MV persistence are discussed. Recent fi
ndings, especially the analysis of CD46 and moesin as receptor acting
molecules for MV, correlate well with the tropism of MV and open new f
ields for the investigation of MV associated immunosuppression and cen
tral nervous system (CNS) complications.