The Centers for Disease Control and Prevention have issued travel health notices for five nations because of coronavirus infection.

Level 3: Avoid non-essential travel

Italy. In addition to the warning against non-essential travel to any part of the country, the notice specifies “do not travel” to the northern regions of Lombardy and Veneto.

China. The Level 3 warning does not cover Hong Kong, Macau or Taiwan.

South Korea.

Iran.

Level 2: Practice enhanced precautions

Japan. “Older adults and those with chronic medical conditions should consider postponing non-essential travel,” the warning says. People who do travel to Japan are urged to avoid contact with sick people, wash their hands often and monitor their own health.

Level 1: Practice regular precautions

Hong Kong.

The only other Level 3 notice currently in effect is a warning in effect since May to avoid non-essential travel to Venezuela because of “health infrastructure breakdown.”

Level 2 notices cover polio in some African and Asian nations, yellow fever in Nigeria, rubella in Japan and ebola in Democratic Republic of the Congo. Vaccinations are available for polio, yellow fever and rubella.

Click here for the full list of CDC travel health notices.