Polyarteritis nodosa: decreasing incidence in Poland

Abstract

Incidence of PAN in Poland was estimated to be 2.4 per million and was comparable to the incidence found in other European countries. PAN incidence decreased during 2008-2013. The decrease in PAN incidence may be related to environmental, infectious (hepatitis B) or other unknown factors. Future research is needed to identify the cause of the decrease and potential triggers of the disease.