West Nile Virus Cases Rise Sharply in Italy

Italy is experiencing a notable rise in West Nile fever cases this summer, with the European Centre for Disease Prevention and Control (ECDC) reporting 46 infections up to the previous Wednesday. These cases are spread across 20 Italian regions, affecting major cities like Milan and Rome, as well as their surrounding areas.

The World Health Organization (WHO) previously reported 21 confirmed cases in Italy. The ECDC's updated figures also indicate broader European spread, with 81 locally acquired cases reported across the continent. Besides Italy's 46 cases, other affected countries include Greece (21 cases), North Macedonia (5), Romania (5), Spain (3), and France (1). In Germany, two cases were registered this year, but both were linked to travel infections.

The West Nile Virus is primarily transmitted between mosquitoes and birds, though infected mosquitoes can also transmit it to humans. According to the WHO, the risk of severe illness is generally low for most people. The Robert Koch Institute (RKI) in Germany notes that many infections go unnoticed, while about one-fifth of infected individuals develop flu-like symptoms two to 14 days after exposure. In rare, severe instances, the virus can lead to neurological diseases such as encephalitis and meningitis.

Health authorities advise seeking immediate medical attention for symptoms like high fever, rash, or a stiff neck. The number of West Nile fever cases typically increases significantly during the summer months, particularly between July and September. The WHO suggests protective measures, such as wearing appropriate clothing and using mosquito repellents, especially when traveling, as longer and hotter summers may increase transmission opportunities.