19214
Single - dose nevirapine for mothers and newborns at delivery is the simplest prevention strategy for vertical HIV - 1 transmission and hence widely used in resource - constrained settings .
 Chemical: nevirapine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: nevirapine 
Answer:
 Chemical: nevirapine