<human>: Is there a way I can prevent a cold sore from forming?
<bot>: Yes, you can prevent a cold sore from forming by avoiding contact with the virus that causes it. This includes washing your hands frequently and avoiding kissing or sharing utensils with people who may have the virus. You should also avoid touching your face and using hand sanitizer when possible. Additionally, if you are already infected with the virus, taking antiviral medications can help reduce the severity of symptoms.