Can house mice harm you?

Answered by Phillip Nicastro

House mice may seem harmless and innocent, but they can actually pose a threat to your health. While they may not be as dangerous as deer mice, which are known carriers of hantavirus, house mice can still spread diseases that can make you very sick. It is important to be aware of the potential risks associated with these small rodents.

One of the primary ways in which house mice can transmit diseases is through their bodily fluids and waste products. Their urine, droppings, saliva, and nesting materials can all carry harmful pathogens that can infect humans. When these materials come into contact with food, water, or surfaces that we come into contact with, the risk of transmission increases.

One of the diseases that house mice can spread is hantavirus. While it is more commonly associated with deer mice, house mice can also carry this virus. Hantavirus can cause a severe respiratory illness called hantavirus pulmonary syndrome (HPS), which can be fatal. The virus is primarily transmitted to humans through inhalation of airborne particles from contaminated mouse droppings or urine.

Salmonellosis is another disease that can be transmitted by house mice. Salmonella is a type of bacteria that can cause food poisoning. Mice can carry Salmonella in their digestive systems and excrete it in their feces. If food or water becomes contaminated with mouse droppings or urine containing Salmonella, consuming it can lead to illness characterized by symptoms such as diarrhea, fever, and abdominal cramps.

Listeria is yet another disease that house mice can spread. Listeria is a type of bacteria that can cause a serious infection called listeriosis. It is commonly found in soil, water, and various animals, including rodents. If food or water becomes contaminated with mouse feces or urine containing Listeria, consuming it can lead to listeriosis, which can result in flu-like symptoms, meningitis, or even death, particularly in vulnerable individuals such as pregnant women, newborns, and those with weakened immune systems.

It is worth noting that these diseases can also be transmitted indirectly by house mice. For example, if a mouse walks across a kitchen counter or food preparation area, it can leave behind traces of urine or droppings that can contaminate surfaces. If you touch these surfaces and then touch your mouth or eat food without proper hand hygiene, you can inadvertently ingest the pathogens and become infected.

Preventing mouse infestations and taking appropriate measures to eliminate them is crucial to avoid these health risks. Proper sanitation, sealing potential entry points, removing food and water sources, and using traps or professional extermination services can help control and prevent mouse infestations.

While house mice may appear harmless, they can indeed harm your health. Their urine, droppings, saliva, and nesting materials can carry diseases such as hantavirus, salmonellosis, and listeria. It is important to take preventive measures and promptly address any mouse infestations to protect yourself and your loved ones from these potential health risks.