19215
HIV - 1 - positive mothers and newborns received single - dose nevirapine in a prevention of mother - to - child HIV - 1 transmission ( PMTCT ) program in Uganda .
 nevirapine
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 nevirapine