1537
The current best treatment for HCV infection is combination therapy with pegylated interferon and ribavirin .
 Disease: HCV infection; Chemical: interferon; 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: HCV infection; Chemical: interferon; Chemical: ribavirin