Mosquitoes of the Asian tiger species advancing - appropriate action needed?
Asian Tiger Mosquito Spreading in Bavaria
In response to the relatively dry spring, Bavaria appears to have fewer mosquitoes this year. However, the State Office for the Environment warns that a mosquito outbreak is not yet foreseeable. Of concern, though, is the growing presence of the Asian tiger mosquito in the region.
Tiger mosquitoes have already established themselves in Fürth, with populations reported in Munich and Würzburg as well. In 2021, they were found in 17 cities and districts, compared to 10 in 2023. The State Office for Health and Food Safety (LGL) in Erlangen continues to monitor the situation this year, placing traps in several cities and districts.
The Asian tiger mosquito is native to tropical climates but has been spreading across Europe via transport. First discovered in Bavaria in 2012, climate change makes the region increasingly suitable for its survival. Unlike many native mosquitoes, these mosquitoes are active during the day and are more aggressive.
While the risk of disease transmission is currently assessed as low, growing tiger mosquito populations can increase the risk. The tiger mosquito can transmit West Nile virus, dengue fever, and Zika virus. The LGL emphasizes that increased mosquito populations, particularly if stable, can elevate the risk.
Cities such as Fürth and Munich are taking action to track the spread. In Fürth, the focus is on the southern part of the city, while in Munich, traps are distributed throughout the city. The goal is to slow the spread as much as possible.
Public awareness plays a crucial role in preventing mosquito breeding grounds. The Bavarian Health Minister, Judith Gerlach (CSU), urges residents to cover rain barrels and empty standing water in watering cans and plant pots regularly. In Würzburg, further investigations are underway to determine if a population has already formed after recurring tiger mosquito sightings.
Although vector control measures are no longer being used in urban areas and small gardens in Fürth, insecticides are being used around sites such as kindergartens, playgrounds, schools, and nursing homes. In addition, the city is addressing mosquito breeding grounds in the sewer system.
While the Asian tiger mosquito poses a growing concern for public health in Bavaria, the State Office for the Environment and local health authorities continue to work collaboratively to monitor the situation and implement control measures where necessary.
The Asian tiger mosquito's presence in Bavaria, now found in cities like Fürth, Munich, and Würzburg, is a worrying development for health-and-wellness, given its ability to spread diseases such as West Nile virus, dengue fever, and Zika virus. As climate change makes Bavaria increasingly suitable for the survival of this species, the State Office for Health and Food Safety (LGL) continues to monitor the situation in environmental-science, placing traps in various cities and districts to slow its spread.
