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For the second consecutive week, no destinations were added to the US Centers for Disease Control and Prevention’s “high” risk category for travel. A few destinations moved down a risk level, including Kenya, which is now in the “low” risk category.

Level 3 locations account for more than half of the roughly 235 places monitored by the US Centers for Disease Control and Prevention.

That’s more than half of all places on the CDC site, and some of those destinations are among the most popular for tourists around the world.

Only one country, the sparsely populated desert nation of Namibia, dropped out of Level 3 to a lower risk rating this week.

Level 3 became the top rung in terms of risk level in April after the CDC overhauled its ratings system for assessing Covid-19 risk for travelers.

The designation applies to places that have had more than 100 cases per 100,000 residents in the past 28 days.

Relatively few places in the world are currently in Levels 2 or 1.

Level 4, previously the highest risk category, is now reserved only for special circumstances, such as extremely high case counts, emergence of a new variant of concern or health care infrastructure collapse. Under the new system, no destinations have been placed at Level 4 so far.

“Unknown” is for places from which the CDC didn’t receive enough date to make an assessment.

More on Level 3

The bridges and canals of  Amsterdam are a favorite of tourists to the Netherlands, which is lodged at Level 3 along with much of Europe.

Much of Europe has been stubbornly lodged at Level 3 for months with the summer travel season now in a traditionally busy August. The following popular European destinations were among those remaining at Level 3 as of August 8:

• France
• Germany
• Greece
• Ireland
• Italy
• The Netherlands
• Norway
• Portugal
• Spain
• United Kingdom

Those aren’t the only high-profile spots that find themselves at Level 3. Numerous other destinations around the world are among those in the “high” risk category, including the following:

• Brazil
• Canada
• Costa Rica
• Malaysia
• Mexico
• South Korea
• Thailand
• Turkey

The CDC advises that you get up to date with your Covid-19 vaccines before traveling to a Level 3 destination. Being “up to date” means you have had not only the full initial vaccinations but any boosters for which you’re eligible.

The CDC advises that you get up to date with your Covid-19 vaccines before traveling to a Level 3 destination. Being “up to date” means you have had not only the full initial vaccinations but any boosters for which you’re eligible.

Level 2

A beautiful sunset highlights the dunes of the  Namib desert at Sossusvlei, Namibia. The Southwest African nation moved down to Level 2 this week.

Destinations carrying the “Level 2: Covid-19 Moderate” designation reported 50 to 100 Covid-19 cases per 100,000 residents in the past 28 days. The CDC moved four places to this level on Monday:

The CDC added two destinations to Level 2 on Monday:

• Cuba
• Namibia

The move was bad news for Cuba, which had been at Level 1. Namibia dropped down from Level 3.

The move was bad news for all three locations, which were all previously listed at Level 1. There are 20 places listed at Level 2 this week.

You can view the CDC’s risk levels for any global destination on the agency’s travel recommendations page.

In its broader travel guidance, the CDC has recommended avoiding all international travel until you are fully vaccinated.

Level 1

To be listed as “Level 1: Covid-19 Low,” a destination must have had 49 or fewer new cases per 100,000 residents over the past 28 days. Two places were added to the category on August 8:

A few of the more popular places in the “low” risk category this week include Indonesia, India and the Philippines.

Unknown

Finally, there are the destinations the CDC has deemed to be of “unknown” risk because of a lack of information. Usually, but not always, these are small, remote places or places with ongoing warfare or unrest.

Just one destination was added this week: Malawi.

The CDC advises against travel to these places precisely because the risks are unknown. Other destinations in this category that typically draw more tourist attention include Hungary, the Maldives and Vietnam.

There are about 65 places listed as “unknown” this week, making up more than one-quarter of all the places monitored.

A medical expert weighs in on risk levels

Transmission rates are just “one guidepost” for travelers’ personal risk calculations, according to CNN Medical Analyst Dr. Leana Wen.

We’re in “a phase in the pandemic where people need to make their own decisions based on their medical circumstances as well as their risk tolerance when it comes to contracting Covid-19,” according to CNN Medical Analyst Dr. Leana Wen.

There are other factors to weigh in addition to transmission rates, according to Wen.

“Another is what precautions are required and followed in the place that you’re going and then the third is what are you planning to do once you’re there,” she said.

“Are you planning to visit a lot of attractions and go to indoor bars? That’s very different from you’re going somewhere where you’re planning to lie on the beach all day and not interact with anyone else. That’s very different. Those are very different levels of risk.”

Vaccination is the most significant safety factor for travel, since unvaccinated travelers are more likely to become ill and transmit Covid-19 to others, Wen said.

And it’s also important to consider what you would do if you end up testing positive away from home.

While US-bound travelers no longer have to present a negative Covid-19 test to get home from international destinations, the CDC still advises testing before boarding flights back to the States and not traveling if you are sick.

“Of course, if people have symptoms or exposure while traveling, they need to get tested, and if they test positive, to follow CDC’s isolation guidelines,” Wen told CNN Travel.

If you’re concerned about a travel-specific health situation not related to Covid-19, check here.

Top image: Moored boats dot the seafront in Buzios, a resort town not far from Rio de Janeiro. (Ekaterina Belova/Adobe Stock)