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Vaccination is possible to prevent infections with some viruses : hepatitis B virus ( HBV ) , varicella - zoster virus ( VZV ) , influenza A and B viruses , Yellow fever virus and poliovirus ; but not for others : human immunodeficiency virus ( HIV ) , hepatitis C virus ( HCV ) , herpes simplex virus ( HSV ) , cytomegalovirus ( CMV ) , and most hemorrhagic fever viruses ( HFV ) ( except for Yellow fever virus ) .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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