Italy: Confirmed dengue fever activity reported in multiple regions through early October /update 3

Event

Health authorities continue to report locally acquired dengue fever cases in multiple regions in Italy, with an additional 17 cases reported Sept. 12-26, bringing the case count to 36 confirmed cases since Aug. 24. This is compared to no locally acquired cases reported since 2020. The province of Lodi (25 cases) is the most affected, followed by the province of Rome (9 cases), and the province of Latina (2 cases). Italian health authorities have implemented vector control measures in the affected regions and urged the public to take mosquito bite prevention measures. This report represents the most complete data available as of Oct. 2.

Context

Italian health officials reported the country’s first locally acquired dengue fever cases in 2020 in the Veneto region, where ten cases were reported.

A dengue fever vaccine is available in some countries. It is only recommended for individuals with a history of dengue infection and in a country with a high dengue fever burden. Dengue fever is transmitted through the bite of an infected mosquito. The risk of infection is often highest in urban and semi-urban areas. Symptoms of dengue fever include a sudden onset of fever and at least one of the following: severe headache, severe pain behind the eyes, muscle and/or joint pain, rash, easy bruising, and/or nose or gum bleeding. Symptoms typically appear 5-7 days after being bitten but can develop up to 10 days after exposure. Dengue fever can progress to a more severe form known as dengue hemorrhagic fever (DHF). DHF can be fatal if it is not recognized and treated in a timely manner.

Advice

If you have previously been infected with dengue fever, consult with your physician regarding vaccination. Avoid mosquito bites and remove standing water to reduce the number of biting mosquitoes. Seek medical attention if symptoms develop within two weeks of being in affected areas. Do not use aspirin or ibuprofen products if dengue fever is suspected, as these could exacerbate bleeding tendencies associated with the disease.