HARRISBURG, Pa. (KDKA) – The Pennsylvania Department of Health is recommending people who travel to 15 states quarantine after they return home.

The health department Thursday made the recommendation to travelers on Thursday.

The 15 states are: Alabama, Arizona, Arkansas, California, Florida, Georgia, Idaho, Louisiana, Mississippi, Nevada, North Carolina, South Carolina, Tennessee, Texas and Utah.

This comes ahead of Fourth of July where an increase in travelers is expected.

In Allegheny County, officials are blaming record-breaking surges in daily case counts on younger people traveling and going to bars.

The health department says Myrtle Beach, Houston, Nashville, Miami, Tampa and Naples “came up multiple times” during case investigations into new coronavirus patients.

Allegheny County officials are also recommending travelers quarantine. County officials say if travelers go to a place with a high number of coronavirus cases, it’s recommended they quarantine for 14 days and get a test when they return home.

The Allegheny County Health Department director also says to wait at least three days to get tested after returning from a coronavirus hot spot. Dr. Debra Bogen says that if a traveler tests too soon, they could miss detecting the virus and get a positive result.