There have been 1,022 individual cases of measles confirmed in 28 states so far this year, according to the Atlanta-based Centers for Disease Control and Prevention.

That’s the greatest number of reported cases in the country since 1992 and since measles was declared eliminated in 2000.

» RELATED: What is measles and how can you prevent it?

As of April 25, Georgia health officials have confirmed six cases of measles in the state.

According to the CDC, outbreaks are linked to unvaccinated travelers bringing measles back to the United States from places where large outbreaks are on the upswing, such as Israel, Ukraine and the Philippines.

Officials say this outbreak is a textbook example of why it's critical to vaccinate against measles, the leading cause of vaccine-preventable deaths in the world.

Agency experts worry the outbreak might affect summer camps and summer travel and urge folks to check their vaccination status before traveling.

Note that children should receive two doses of the MMR vaccine, first at 12 to 15 months of age and again between ages 4 to 6. All teens and adults should also be up to date on vaccinations. Check CDC.gov to learn if you're one of the exceptions and should hold off on getting a measles vaccine.

More on measles prevention at AJC.com.