Health-related hazards caused by Rodents

At the start of the winter season when the outside temperature lowers down, insects and rodents start rushing inside your homes to find the favourable temperature and most of them hibernate. Rodents not only irritate you or cause damage to your property but they are also a source of many critical health hazards.

Studies showed that rats and mice can spread up to 35 diseases. Mode of the spread of these diseases is through direct handling of rodents, through there saliva, droppings, urine or by direct bitting of rodents. Some other bugs can also transfer these diseases from rodents to humans like ticks, mites, and fleas who feed on infected or dead rodents.

Their body is flexible so they can enter your homes, cars or every hiding place through a very small space which you can’t even look thoroughly. They can cause cross-contamination which would be a source of foodborne illness through the transfer of many hazardous microbes like salmonella. Studies showed that a single mouse is able for 25000 fecal pellets means 70 times a day.

So to avoid this situation and restrict infestation its important to take timely action for removal of these pests.

Below we have discussed some of the common hazardous diseases caused by rodents.

Fatal Hantavirus

This virus was first identified in 1993 in America. Carriers of this virus are deer or white-footed mouse and cotton or rice rats. Hantavirus is not a single one, it’s a group of viruses that can affect humans causing blood, kidney and respiratory disorders may result in death. It’s not common but very serious and not predictable.

This virus infects you by different means. If you stirred up rodents droppings, urine and their nesting material then it can raches you through inhalation because its airborne too.

Furthermore, if an infected rat bites you it can be transmitted through its slive.  Or if you eat food contaminated by infected rat then there are also chances of infection. This virus is mostly carried by deer mice.

Symptoms of Hantavirus appears between one to five weeks after virus exposure thorough contaminated food, infected rat bitting or through its droppings or urine. This virus can cause Hantavirus Pulmonary Syndrome (HPS), it’s a severe respiratory disorder which can lead to death. Symptoms include fever, muscle aches, abdominal pain, vomiting, chills, headache and dizziness. These are initial symptoms after that severe problem like HPS occurs with 38% death rate.

There is no treatment to this, only oxygen supply can be given with some painkillers for some medical aid. Recovery depends on your immune system.

Lymphocytic Choriomeningitis (LCM)

This disease is caused by Lymphocytic Choriomeningitis virus transmitted through rodents directly or indirectly. The common house mouse is the main carrier of this virus. Studies showed that in America only 5% of this rat carry the virus and it can be transmitted to other rats and then to humans.

The virus can be transmitted to human by direct bitting of rats, through their urine, droppings or nesting materials or by consuming contaminated food from infected rats. Transmission of this virus to humans is only reported in the winter season when rats look for warm places. Person to person transmission is not noted but a mother to fetus transmission was reported which leads to the death of a baby or neurological disorder.

This virus attack in two modes. In 1st mode, symptoms are nausea, headache, vomiting, muscles aches and appetite. But in the 2nd phase, some severity noted with neurological diseases. Symptoms include encephalitis, meningitis, or meningoencephalitis. These are severe neurological diseases which may cause permanent neuro disorder in some cases. This virus is not too fatal and the mortality rate is only 1%.


This is an animal or humans disease caused by Francisella tularensis bacteria. This bacteria attacks hares, rabbits and other rodents which die in large numbers due to this outbreak. Human gets infected to this virus by various routes, though ticks and mites who fed on infected or dead rates, by drinking contaminated water or by laboratory and inhaling contaminated air.

When this bacteria enters through eyes Oculoglandular disease occurs. When bacteria get into the human body via eating contaminated foods then Oropharyngeal disease occurs. The most serious one is pneumonic infection with severe chest pain and breathing difficulties. This disease occurs due to inhalation of bacteria through the dust.

If timely treatment is done then this disease is curable otherwise results may be fatal.


This disease is caused by the bacteria Yersinia pestis and is famous for the huge mortality rate in the middle ages in Europe. This disease has a serious impact on humans and mammals. Plague occurs when infected rat bites humans or when humans touch infected rats.

Bubonic plague occurs when through flea bites. These fleas suck blood f infected rats and are a source of transmission. Your dogs and cats can also take these fleas into the house. Symptoms are fever, chills, headache, painful lymph knots and swollen tenders. Symptoms appear in between 2 to 6 days after transmission of bacteria.

Plague can also spread through other means like breathing and contaminated foods. It’s a very serious disease but curable if responded timely.

These are some of the serious diseases that can be spread by rodents. So your timely decision to call pest operator will save you from this problem. Make your 1st defence line stronger and make sure that there will be no gap from where they get in.

Call Now Button