(CNN) — Vietnam was the only destination extra to the US Facilities for Sickness Management and Prevention’s maximum-chance Amount 4 class for journey on Monday.

The “incredibly substantial” possibility group nevertheless consists of more destinations than all the other concentrations put with each other, with approximately 140 places now at Level 4. In early January, there had been close to 80 places detailed there.

The CDC places a location at “Level 4: Covid-19 Really Significant” threat when a lot more than 500 instances for every 100,000 people are registered in the earlier 28 times.

To recap, a single location was included to Stage 4 on February 28:

• Vietnam

Vietnam was formerly mentioned at Level 3, or “higher” chance.

World scenario numbers have been declining given that peaking in late January, but professionals warning that the pandemic is not more than.

New Zealand, which has had reasonably couple of Covid circumstances thanks to its demanding pandemic controls, has recorded record figures of scenarios in the earlier 7 days. The nation remained at “superior” risk Amount 3 on Monday right after transferring up from Stage 2 previous week.

Vietnam was moved to the CDC’s greatest-risk class for journey on Monday. Here, a striking landscape of terraced rice fields is pictured in northern Yen Bai province.

Nhac Nguyen/AFP via Getty Images

CDC: Avoid Degree 4 places

The CDC advises staying away from journey to Level 4 nations. CDC thresholds for journey well being notices are centered mainly on the quantity of Covid-19 situations in a vacation spot.

Other tourist favorites stalled on Level 4 for a month or additional include Mexico, Canada, France, Peru, Singapore and Spain. The United Kingdom has been there considering the fact that July 2021.

Variations at Level 3

The Degree 3 “significant” danger group — which applies to places that have experienced in between 100 and 500 conditions for every 100,000 inhabitants in the past 28 times — saw three additions on Monday. They have been:

• Comoros
• Hong Kong
• São Tomé and Príncipe

The move was great information for Comoros, an archipelago off Africa’s east coast, and São Tomé and Príncipe, an island nation off the west coastline of Central Africa, which experienced both of those earlier been at Stage 4.

Levels 2, 1 and mysterious

Places carrying the “Level 2: Covid-19 Moderate” designation have observed 50 to 99 Covid-19 conditions per 100,000 residents in the past 28 days.

On Monday, there was a whole lot of excellent news for Africa. 9 destinations, together with Ghana and Uganda, earlier stated at Stage 3 moved down to the “moderate” Stage 2 category.

In total, 10 locations moved down to Degree 2 on Monday. The tenth, Montserrat, is a British Overseas Territory in the Caribbean.

Below are the 10 places moved to Degree 2 on February 28:

• Côte d’Ivoire
• Ghana
• Lesotho
• Liberia
• Mali
• Montserrat
• Republic of the Congo
• Rwanda
• Togo
• Uganda

To be in “Stage 1: Covid-19 Low,” a location need to have less than 50 new situations for every 100,000 inhabitants around the past 28 days.

Nigeria was the sole location moved to Level 1 on Monday. The country on the western coastline of Africa was earlier mentioned at Stage 2. There are now only 5 places in the class, such as China, which not too long ago hosted the Winter season Olympic Games.

Ultimately, there are locations for which the CDC has an “unfamiliar” hazard simply because of a deficiency of facts. Typically, but not constantly, these are small, distant areas or destinations with ongoing warfare or unrest. There had been no additions to the category on Monday.

Tanzania, Cambodia and Macau are amid the far more-visited places now stated in the mysterious class. The CDC advises versus journey to these destinations precisely because the hazards are unidentified.

A health-related pro weighs in on possibility ranges

Transmission charges are “a person guidepost” for travelers’ particular possibility calculations, according to CNN Healthcare Analyst Dr. Leana Wen.

“We are moving into a section in the pandemic where by folks require to make their individual decisions primarily based on their health-related circumstances as effectively as their risk tolerance when it comes to contracting Covid-19,” Wen claimed in mid-February.

“You should interpret Level 4 to necessarily mean this is a place with a great deal of local community transmission of Covid-19. So if you go, there is a higher opportunity that you could agreement the coronavirus,” explained Wen, who is an emergency health practitioner and professor of wellbeing coverage and administration at the George Washington University Milken Institute University of General public Wellbeing.

Some folks will come to a decision the hazard is way too large for them, Wen reported. “Other people will say, ‘Because I am vaccinated and boosted, I am prepared to get on that hazard.’

“So this seriously needs to be a private decision that people today weigh knowing that proper now the CDC is classifying the distinctive degrees based on local community transmission charges, and in essence only that,” Wen reported. “They’re not getting into account individual conditions.”

Best picture: Tourists get boat excursions by means of the Thu Bon River on April 24, 2021, in Hoi An, Vietnam. (Linh Pham/Getty Photographs).