Posted: April 29th, 2018

Viruses Spread by Rodents: A Public Health Threat

Viruses Spread by Rodents: A Public Health Threat

Rodents are small mammals that belong to the order Rodentia, which includes mice, rats, squirrels, hamsters, and many others. Rodents are often considered pests because they can damage crops, contaminate food, and transmit diseases to humans and animals. One of the most serious threats posed by rodents is the transmission of viruses that can cause severe and sometimes fatal illnesses.

Some of the viruses that rodents can carry and spread include:

– Hantavirus: This virus is found in the urine, droppings, and saliva of infected rodents, especially deer mice. Humans can get infected by breathing in contaminated dust or touching contaminated surfaces. Hantavirus can cause hantavirus pulmonary syndrome (HPS), a severe respiratory disease that has a mortality rate of about 38% (CDC, 2020).
– Lassa virus: This virus is endemic in West Africa, where it is carried by multimammate rats. Humans can get infected by direct contact with infected rodents or their excreta, or by eating contaminated food. Lassa virus can cause Lassa fever, a hemorrhagic fever that can lead to shock, bleeding, and organ failure. Lassa fever has a mortality rate of about 15% in hospitalized cases, and up to 50% in severe cases (WHO, 2018).
– Arenavirus: This is a group of viruses that are carried by various rodents around the world. Humans can get infected by exposure to rodent urine or saliva, or by inhalation of aerosols. Arenaviruses can cause different types of hemorrhagic fevers, such as Argentine hemorrhagic fever, Bolivian hemorrhagic fever, and Lymphocytic choriomeningitis (LCM). These diseases can cause fever, headache, bleeding, neurological symptoms, and death. The mortality rates vary depending on the type of virus and the availability of treatment (CDC, 2019).

How to Prevent Rodent-Borne Viral Diseases

The best way to prevent rodent-borne viral diseases is to avoid contact with rodents and their habitats. Some of the measures that can help reduce the risk of infection include:

– Sealing any gaps or holes in walls, floors, or roofs that can allow rodents to enter buildings.
– Storing food in rodent-proof containers and disposing of garbage regularly.
– Cleaning up any spilled food or water that can attract rodents.
– Using traps or baits to control rodent populations around homes or workplaces.
– Wearing gloves, masks, and protective clothing when handling or cleaning rodent-infested areas.
– Washing hands with soap and water after any contact with rodents or their excreta.
– Seeking medical attention if experiencing any symptoms of rodent-borne viral diseases.

Conclusion

Rodents are not only nuisances but also potential sources of deadly viruses that can affect humans and animals. By taking precautions to avoid exposure to rodents and their habitats, we can protect ourselves and our communities from these serious public health threats.

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CDC. (2019). Arenaviruses. Retrieved from https://www.cdc.gov/vhf/arenavirus/index.html

CDC. (2020). Hantavirus. Retrieved from https://www.cdc.gov/hantavirus/index.html

WHO. (2018). Lassa fever. Retrieved from https://www.who.int/news-room/fact-sheets/detail/lassa-fever

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