5041
She was treated with acyclovir and subsequently developed VZV antigen - positive zoster .
 VZV antigen - positive zoster, acyclovir
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 VZV antigen - positive zoster, acyclovir