Roseola Symptoms and Causes
    
        
        
            
        
          Human herpes virus 6 (HHV6) and human herpes virus 7 (HHV7): Roseola is usually caused by HHV6, but it can also be caused by HHV7. These two forms do not cause cold sores and genital herpes infections; they cause several days of fever followed by... 
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