The United States has named Curaçao the most dangerous area and is dark red on level 4 on the map due to an increase in infections. Americans are strongly advised not to travel to Curacao. Those statements luchtvaartnieuws.nl
The increase has been since mid-July, as there has been practically no infection on the island for several months. Although the numbers are much lower than their initial April peak, most people are now vaccinated and there is no reason for it to leave the US level 4.
Following that, the State Department in Washington adjusted the travel advice. A downfall for Curaçao, because American tourists are the main source of income. At the same time, not all Americans care.
Other Caribbean islands in the Kingdom have less negative travel advice. Sabah and St. Eustatius are classified as Level 1 (low risk), Bonaire Level 2 (limited risk) and Aruba and St. Morton Level 3 (high risk, but no problem if you are fully vaccinated).
Incidentally, the Netherlands is classified as Level 4, very high risk, very long lasting, but the consequences are minimal because American tourists are not important to the economy.