West nile virus cases rise in Israel as two people die in 2026

A mosquito-borne disease has resurfaced in Israel, with 13 people reportedly diagnosed with West Nile fever this year and two deaths recorded.

A mosquito-borne disease has resurfaced in Israel, with 13 people reportedly diagnosed with West Nile fever this year and two deaths recorded.

According to reports, Israel’s Ministry of Health has confirmed the presence of mosquitoes carrying the West Nile virus in several areas where cases have been identified. The disease is primarily transmitted to humans through the bite of infected mosquitoes.

Israel’s Ministry of Environmental Protection said mosquitoes carrying the virus were detected in the Menashe Regional Council, Ramat Hasharon and Eilat.

Health officials explained that West Nile virus is generally transmitted through mosquitoes that become infected after feeding on birds carrying the virus. The infected mosquitoes can subsequently transmit the virus to humans through bites.

Professor Sigal Sadeski, head of the Public Health Division, said that West Nile fever is mild in most cases and many infected people may not develop noticeable symptoms.

However, the infection can become serious in some patients. Health experts warn that the virus can affect the nervous system and, in severe cases, lead to complications such as encephalitis or meningitis.

The risk of severe illness is reportedly higher among people over the age of 60 and those who already have underlying health conditions.

Investigation Underway

Israeli authorities have launched epidemiological investigations to determine how and where the affected individuals were exposed to infected mosquitoes.

Officials are also examining whether cases reported in different locations are connected and are attempting to identify areas where infected mosquitoes may have come into contact with people.

The discovery of infected mosquitoes has also increased the importance of mosquito surveillance and control measures in the affected areas. Environmental authorities are expected to monitor mosquito populations and take steps aimed at reducing the risk of further transmission.

Previous Outbreak in 2024

Israel also experienced a significant outbreak of West Nile virus in 2024. According to an Israeli report submitted to the World Organisation for Animal Health, 916 human cases had been confirmed by September 2024, with 71 deaths reported.

The latest cases have renewed concerns about the seasonal spread of West Nile virus and the potential risks posed by infected mosquitoes.

While most infections are mild or may cause no obvious symptoms, severe neurological complications can occur in a small proportion of patients. Health authorities are therefore continuing surveillance and investigating the latest infections to better understand the spread of the virus.

The current outbreak highlights the importance of mosquito-control measures, particularly during periods when mosquito activity is high. Authorities are expected to continue monitoring affected areas and investigating possible sources of transmission.