Vaccines can prevent which?
○ A. All minor illnesses.
○ B. All bloodborne illnesses.
◇ C. Most, but not all, bloodborne illnesses.
○ D. All fatal illnesses.
○ A. All minor illnesses.
○ B. All bloodborne illnesses.
◇ C. Most, but not all, bloodborne illnesses.
○ D. All fatal illnesses.