HEALTH & SAFETYSERIES

Hantavirus: Risks, Transmission, Symptoms & Prevention for Facility Professionals | Betco Health & Safety BETCO. Health & Safety Series Pathogen Awareness Guide Hantavirus Understanding risks, transmission, symptoms, and effective prevention strategies for facility professionals. Betco Corporation  ·  betco.com Professional Performance, Every Day. In This Article 01What Is Hantavirus? 02How Is It Spread? 03Carrier Rodent Species 04Symptoms & Progression 05Prevention & Cleaning 06Occupational Safety ✳ 01 — Overview What Is Hantavirus? Hantaviruses are zoonotic viruses belonging to the family Hantaviridae, maintained in nature by specific rodent reservoir species. Infected rodents typically show no signs of illness but shed the virus continuously in their urine, feces, and saliva — creating a persistent environmental hazard wherever rodent activity is present. When rodent excretions contaminate an environment, the virus can survive in dried material and pose a serious public health risk. Humans are most commonly exposed through inhalation of aerosolized particles — making thorough facility inspection, rodent exclusion, and correct cleaning protocols the critical lines of defense. Hantavirus Pulmonary Syndrome (HPS) Found primarily in the Western Hemisphere. A rapidly progressive disease affecting the lungs and cardiovascular system, also referred to as Hantavirus Cardiopulmonary Syndrome (HCPS). Can be life-threatening without early intensive supportive care. Hemorrhagic Fever with Renal Syndrome (HFRS) Predominant in Europe and Asia. Primarily affects the kidneys and vascular system. Severity varies by the specific strain involved. Requires prompt medical evaluation and supportive intervention. Critical Fact There is currently no licensed vaccine and no specific antiviral cure for hantavirus infection. Prevention through rodent control and safe environmental practice is the only reliable protection available. Betco Health & Safety — Hantavirus01 → 02 — Transmission How Is Hantavirus Spread? Transmission to humans occurs almost entirely through environmental exposure to contaminated rodent excretions. Understanding exactly how the virus reaches people is fundamental to implementing effective protective measures in any facility or worksite. Primary Route — Inhalation The most common and dangerous route is inhalation of aerosolized virus particles. Activities such as sweeping, vacuuming, or disturbing areas contaminated with rodent droppings, urine, or nesting material cause microscopic particles to become airborne — where they can be inhaled directly into the lungs. Secondary Routes Direct contact with contaminated surfaces followed by touching eyes, nose, or mouth Rodent bites that break the skin surface Ingestion of food or water contaminated with rodent excretions ! Critical Fact Person-to-person transmission is extremely rare for most hantavirus strains. The Andes virus found in South America is a documented exception. Standard occupational precautions remain essential in all cases. ● Carrier Species Which Rodents Carry the Virus? Not all common rodents carry hantavirus. The table below identifies key species relevant to the United States — knowing the difference is essential for accurate risk assessment in any facility. Common Name Scientific Name Status Notes Deer Mouse Peromyscus maniculatus Primary Carrier Main U.S. reservoir; widespread across North America White-Footed Mouse Peromyscus leucopus Known Carrier Common in eastern and central U.S. Rice Rat Oryzomys palustris Known Carrier Found in southeastern U.S. wetlands Cotton Rat Sigmodon hispidus Known Carrier Southern and southwestern U.S. House Mouse Mus musculus Not a Carrier Most common urban rodent; does not transmit hantavirus Roof Rat Rattus rattus Not a Carrier Common in coastal areas; not a known vector Norway Rat Rattus norvegicus Not a Carrier Most widespread rat species; not a known vector Betco Health & Safety — Hantavirus02 ⚕ 03 — Clinical Signs Symptoms & Disease Progression Early recognition of hantavirus symptoms is critical — delays in diagnosis can be fatal. Initial symptoms closely mimic influenza, which can lead to dangerous misdiagnosis. Vigilance is essential for anyone who may have had recent rodent exposure. Hantavirus Pulmonary Syndrome (HPS)Incubation Period: 1–8 Weeks Early Stage Fever and chills Fatigue and general malaise Muscle aches in large muscle groups Headache Nausea, vomiting, abdominal pain or diarrhea Late Stage — Days 4–10 Cough and shortness of breath Rapid breathing or respiratory distress Pulmonary edema — fluid in the lungs Low blood pressure and shock Hemorrhagic Fever with Renal Syndrome (HFRS)Incubation Period: 1–2 Weeks Early Stage Back and abdominal pain Fever, chills, nausea Intense headaches Late Stage Blurred vision Low blood pressure or circulatory failure Internal bleeding Acute kidney failure ! Medical Advisory Hantavirus disease can progress with alarming speed. Early hospitalization and intensive supportive care are often critical for survival. Any worker reporting flu-like symptoms following known or suspected rodent exposure requires immediate medical evaluation — do not wait for symptoms to worsen. Betco Health & Safety — Hantavirus03 🛡 04 — Prevention Control Strategies & Safe Practices Because there is no vaccine or curative treatment, prevention is the only effective strategy. A layered approach combining rodent exclusion, environmental management, and rigorous cleaning protocols provides the most complete protection for facility workers and occupants. 01 Rodent Exclusion Seal all gaps, cracks, and entry points in building structures. Steel wool, caulk, and hardware cloth are effective for blocking access routes. Regular perimeter inspections are essential. 02 Food & Waste Control Eliminate food sources by storing all food in sealed containers and implementing rigorous waste management. Remove clutter and potential nesting materials from and around the structure. 03 Pest Control Partnership Work with certified pest control operators to manage and prevent infestations proactively. Regular monitoring and early intervention are key to maintaining rodent-free environments year-round. ● Environmental Cleaning & Disinfection Protocol ! Critical Warning Never sweep or vacuum rodent-contaminated areas. These actions directly aerosolize viral particles into the breathing zone. Wet cleaning methods must always be applied first to fully saturate materials before any removal begins. Step-by-Step Cleaning Procedure Ventilate the area for at least 30 minutes before entering; open windows and doors where possible Don all PPE before entering — gloves, N95 or higher respirator, eye protection, and protective clothing Saturate all droppings, urine, and nesting material with an EPA-registered disinfectant or a freshly prepared 1:10 bleach-to-water solution Allow to soak for a minimum of 5 minutes before handling any contaminated material Remove material using paper towels or damp cloths; seal in double plastic bags