People in the southeastern U.S. be careful as experts say the largest virus infection is about to hit the U.S. sky news the report said.

These periodic cicadas appear every 13 years and once every 17 years.

The last time this rare occurrence occurred 221 years ago in 1803, when Thomas Jefferson was president of the United States.

The event will see two types of cicadas – the 19th and 13th generations – emerging from the ground, with trillions of these tiny insects in the air.

However, there is no need to be afraid as these little flies are not harmful. In fact, they are a valuable food source for birds and mammals.

Additionally, cicadas can aerate lawns and improve water filtration in the soil, while adding nutrients to the soil as they decompose.

according to new york postthe emergence of the 13th generation cicadas will occur in areas such as northern Illinois, eastern Iowa, southern Wisconsin, and some counties in far northwestern Indiana.

The “Brood XIX” with a 13-year cycle will be played in Alabama, Arkansas, Georgia, Indiana, Illinois, Kentucky, Louisiana, Maryland, Missouri, Mississippi, North Carolina, Oklahoma, South Carolina, Tennessee and Virginia.

“We have trillions of amazing organisms crawling out of the earth and climbing into trees, and it’s just a unique experience, a sight worth seeing.