The measles vaccine is recommended for virtually everyone, with few exceptions. The general guidelines for who should receive the measles vaccine include:

1. Children: The measles vaccine is typically administered as part of the measles, mumps, and rubella (MMR) vaccine series. The first dose is usually given at 12-15 months of age, and the second dose is given at 4-6 years of age. These doses are important to ensure long-lasting immunity against measles.
2. Adults: Adults who have not been vaccinated against measles or who have not had measles in the past should consider receiving the vaccine, especially if they are at risk of exposure (e.g., healthcare workers, travelers to regions where measles is endemic, or those in close contact with individuals who have measles).
3. Travelers: Individuals planning to travel internationally should ensure they are vaccinated against measles. Measles is still prevalent in many parts of the world, and travelers can be at risk of exposure, particularly if they are visiting areas with ongoing measles outbreaks.
4. Healthcare Workers: Healthcare workers should be vaccinated against measles to protect themselves and their patients. Measles can spread easily in healthcare settings, and healthcare workers may be at higher risk of exposure.
5. Pregnant Women: Pregnant women who are not immune to measles (either through vaccination or previous infection) should wait until after giving birth to receive the vaccine. However, women who are planning to become pregnant should ensure they are vaccinated before conception.
6. Individuals with Certain Medical Conditions: Some individuals with specific medical conditions that compromise their immune system may not be able to receive the measles vaccine. However, this decision should be made in consultation with a healthcare provider.