Two people have been isolated for testing after falling ill after they returned from areas known to have measles circulating, the Epidemiology and Surveillance Unit of the Ministry of Health reported.

The highly contagious virus has not been confirmed in Bermuda since 1990 — but a spokeswoman said both cases had shown symptoms consistent with measles.

The unit was said to be contacting close contacts of the suspected cases to advise of precautions, including monitoring their health for symptoms.

The island was said to be at risk for measles importation and spread due to decreased measles, mumps and rubella vaccination rates and a resurgence of the measles virus in many countries.

The airborne virus is spread by coughing and sneezing and remains infectious in the air or on surfaces for up to two hours.

Symptoms typically appear seven to 21 days after exposure.

They can include fever, cough, runny nose, red and watery eyes, and a rash that begins on the face and spreads to the rest of the body.

Anyone experiencing these symptoms, particularly if there has been recent travel to an area where measles is circulating or possible contact with someone suspected of having measles, should self-isolate and contact their healthcare provider immediately by telephone for advice before visiting any healthcare facility, to prevent potential exposure to others.

Kim Wilson, the health minister, said the island was fortunate to have avoided measles for so long.

She added: “However, with suspected cases on the island, we must remain vigilant to protect our community.

"Measles is a vaccine-preventable disease. Ensuring adequate protection from measles and other vaccine-preventable diseases is especially important before travelling abroad.

“If you are unsure of your vaccination status, find out from your healthcare provider.”