Chicago Travel Advisory: COVID Precautions Advised in 4% of US. Here’s Where Posted on April 15, 2022 by Travel editor The Chicago Department of Public Health is urging residents who travel to areas of the country deemed medium or high COVID-19 risk by the Centers for Disease Control and Prevention to follow precautions, according to a travel advisory update Friday.Post navigationGreece to drop all covid entry requirements ahead of summer holidaysDavid Helpling Releases New Album – IN