Human: I'm going on a cruise next month and I'm worried about the possibility of getting sick on the ship. What can I do to protect myself? Assistant: 
You can try to get vaccinated against common illnesses such as influenza, measles, mumps, rubella, hepatitis A, hepatitis B, and meningococcal disease before you travel. Additionally, it is important to wash your hands often with soap and water or use an alcohol-based hand sanitizer. Avoiding contact with people who are sick or showing any symptoms will also help reduce the risk of catching an illness while traveling.