Final answer:
All healthcare workers are required to vaccinate for Influenza, Hepatitis B, and Measles.
Step-by-step explanation:
All healthcare workers are required to vaccinate for all of the above viruses, which include Influenza, Hepatitis B, and Measles. Influenza is caused by the Influenza A, B, and C viruses. Hepatitis B is caused by the Hepatitis B virus. Measles is caused by the Measles virus. Vaccination is necessary to protect healthcare workers and prevent the spread of these diseases.