The CDC says that cruise ships must have at least 95 percent of passengers and 98 percent of crew members vaccinated against COVID-19. However, no cruise ship has to ensure that passengers are vaccinated against:
Chickenpox
Cholera
Diphtheria
Flu
Hepatitis A
Hepatitis B
HPV
Measles
Meningococcal
Mumps
Pneumococcal
Polio
Rotavirus
Rubella
Shingles
Smallpox
Tetanus
Tuberculosis
Typhoid Fever
Yellow Fever
