Study Highlights Underestimation of Tick Risks in Southern Norway

Recent research reveals that many residents in southern Norway underestimate the dangers posed by ticks, despite the increasing presence and awareness of these tiny parasites. Ticks are found worldwide, with over 900 species capable of transmitting serious diseases to humans and animals. A comprehensive study involving over 9,400 participants across 22 European countries assessed public knowledge about ticks, their associated diseases, and prevention methods. The findings, published in the journal >Ticks and Tick-borne Diseases>, show that although Norwegians are aware of Borrelia bacteria and tick-borne encephalitis (TBE) virus, many remain unaware of other pathogens like Anaplasma and Babesia, which can also cause illness in humans.

Significant differences were observed between countries. For instance, in Greece and Spain, many struggled to identify ticks properly, partly because these regions have more focus on mosquitoes and sand flies that transmit other diseases. The survey indicated that 75% of respondents had been bitten by ticks at least once, and roughly 12% reported contracting a tick-borne disease, with Lyme disease being the most common in Norway.

Kjelland, a researcher at the University of Agder, expresses concern that many Norwegians do not realize how prevalent and serious tick-borne diseases can be, especially in southern Norway where the perception of danger is lower. While the actual risk of falling ill from a tick bite is relatively low—around 2% of those bitten with Borrelia bacteria develop symptoms—the consequences can be severe for some. Importantly, ticks can bite in parks, gardens, and other outdoor areas, not just forests.

Preventive measures include using insect repellent on the lower body, staying on marked paths, and thoroughly checking oneself after outdoor activities. However, the study found many people misunderstand how to properly remove ticks, with some twisting them or leaving remnants, which can increase infection risk. Proper removal involves pulling the tick straight out with tweezers or fingernails.

Climate change may also introduce new tick species into Norway, such as the Hyalomma tick, which was discovered in Vestby in 2018. This species can carry more dangerous viruses like the Crimean-Congo Hemorrhagic Fever (CCHF). Additionally, the detection of Ixodes persulcatus ticks in northern Norway, which can transmit a more deadly eastern strain of TBE virus, raises concerns about emerging health threats. The TBE vaccine offers protection against these viruses.

In summary, public awareness about the risks associated with ticks is crucial in Norway. While the threat might be less obvious or perceived as lower in certain regions, understanding the realities of tick-borne diseases and taking preventive actions are essential to minimize health risks.

Source: https://medicalxpress.com/news/2025-10-reveals-southern-norway-underestimate-dangers.html