The US Centers for Disease Control and Prevention (CDC) issued a first-phase travel alert to Japan in connection with the spread of new coronavirus infections (Corona 19), according to foreign media including USA Today.

CDNN issued a travel alert on Corona 19 outside of mainland China yesterday, second only to Hong Kong, CNN said.

Japan is the first country outside of China.

Level 1 travel alerts correspond to the 'watch' level, which asks travelers for "usual precautions."

The CDC added that it is not necessary to postpone or cancel the travel plan for the country involved in the trip alert.

CDC earlier raised its travel alerts for Mainland China from Phase 2 to Phase 3 last month.

Level 3 recommends "avoid unnecessary travel."

The CDC advised you to visit Japan or Hong Kong in the last two weeks with travel alerts and to seek medical care if you have corona19 symptoms such as fever, cough, or shortness of breath.

When coughing, I also told them not to cover their mouth and nose with their hands or tissues, and not to move with other cautions.

Apart from the CDC, the US State Department issued a four-phase travel alert last month for the mainland China, "do not travel."

The State Department last week raised travel alerts for Hong Kong from Phase 1 to Phase 2 "to raise awareness."

In addition, the State Department has advised its citizens to reconsider traveling to the Asia-Pacific region or East Asia, or traveling by cruise ship within the region.

When the State Department traveled on a cruise ship, it said, "may be subject to containment procedures by local authorities, and travel restrictions may affect schedules or disembarkation."

The State Department said, "The US government has successfully escaped hundreds of people in recent weeks, but we should not rely on these return flights as an option." Contact the cruise operator and ask for information about current regulations and restrictions. Please keep checking the Department of State's homepage for the latest information. "

The State Department, however, maintains a first-tier travel alert, a "general caution," for the countries in Japan and South Korea's embassy in Corona19, USA Today reported.

Similarly, the number of confirmed Koreans is 104, but the media added that the CDC has not issued a travel alert to Korea.