The U.S. Centers for Disease Control and Prevention (CDC) has cautioned people against travel to Greece, Ireland, Iran, the U.S. Virgin Islands, besides other destinations, on account of a surge in COVID-19 cases in those places.

Other destinations that have been raised to the CDC′s "Level 4: Avoid Travel" advisory include Libya, Kazakhstan, Andorra, Saint Barthelemy, Lesotho, Martinique, Malta, the Isle of Man and Curacao. The State Department also raised the advisory to "Level 4 – Do Not  Travel" for Curacao, the French West Indies, Greece, Ireland, Kazakhstan and the Marshall Islands.

After removing the names of several countries from the highest warning level since June, the U.S. has added more countries back to the list owing to increasing number of COVID-19 cases. Around 90 countries are listed at the highest warning level at present… (Reuters, August 3, 2021)