1801
An extremely rare case of delusional parasitosis in a chronic hepatitis C patient during pegylated interferon alpha - 2b and ribavirin treatment .
 Disease: delusional parasitosis; Disease: chronic hepatitis C; Chemical: pegylated interferon alpha - 2b; Chemical: ribavirin
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: delusional parasitosis; Disease: chronic hepatitis C; Chemical: pegylated interferon alpha - 2b; Chemical: ribavirin