Pest Rodents

Rodents such as mice and rats can carry harmful diseases. Diseases from rodents can spread to people through bite wounds, eating contaminated food or water, or breathing in germs from rodent urine or droppings that are stirred into the air. People can also get diseases from rodent ticks, mites, and fleas. Deer mice are the main carriers of a virus that causes hantavirus  in people. Hantavirus is a rare, but potentially fatal respiratory disease.

If disease wasn’t enough to worry about, rodents can also cause damage to buildings, machinery, and vehicles. Mice and rats, as well as squirrels, can chew on anything. Squirrels, when they are building their nests, chew through siding, underneath eaves, and they can chew through electrical cables. This behavior can create a fire hazard and must be dealt with quickly. 

Diseases rats carry

Leptospirosis

Leptospirosis, also called Weil’s disease, is a bacteria that many rats carry without showing symptoms of infection. Humans become infected when contaminated rat urine or feces comes in contact with mucous membranes. Symptoms in people include headache, fever, vomiting, rash and muscle aches. Some people can become infected and show very few symptoms, while leptospirosis can be fatal in others.

Salmonellosis

Salmonellosis, or salmonella, is another bacterial illness that both domestic and wild rats carry. Like leptospirosis, it is spread to humans through contact with urine and feces. In humans, salmonellosis causes gastrointestinal problems such as diarrhea, stomach cramps and fever. Most healthy adults will recover without any serious long-term problems, but in severe cases the infection enters the bloodstream and spreads through the entire body.

Rat-Bite Fever

As the name implies, rat-bite fever is typically spread when a rat bites a person. Scratches and contact with rat urine and feces can also expose you to rat-bite fever. There are two types of this ailment, including streptobacillary and spirillary. Symptoms of a streptobacillary infection include vomiting, joint and muscle pain, rash, vomiting and fever. A spirillary infection can cause a recurring fever, swollen lymph nodes and a rash.

Plague

Rats are often blamed for spreading the plague. While they can carry and spread the disease, fleas on the rat are more often to blame. Fleas spread plague between animals and from animals to humans. Rats will die if they become infected with plague. Humans can also die without treatment, but antibiotics are usually effective. Symptoms include fever, chills, weakness and swollen lymph nodes.

Top 6 Pest Rodents in the Pacific Northwest

Rattus norvegicus

Norway Rat

Rattus rattus

Roof Rat

Peromyscus maniculatus

Deer Mouse

Mus musculus

House Mouse

 

Sciurus griseus

Western Grey Squirrel

 

Sciurus niger

Fox Squirrel

 

                                     

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