703
Given the seriousness and increasing prevalence of adenovirus disease in certain hosts , especially children , a large , multicenter clinical trial of potentially useful anti - adenoviral therapies , such as intravenous ribavirin , is clearly required to demonstrate the most effective and least toxic therapy .
 Disease: adenovirus disease; 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: adenovirus disease; Chemical: ribavirin