Rodent Control Resources —
Every Claim We Make, Traceable to an Official Source
Every statistic we publish traces to a verifiable official source. This page links to the specific agencies, research institutions, and regulatory bodies whose data informs our work — so you can verify everything directly. No black box. No invented statistics.
Health & Disease — Official California & Federal Sources
California Department of Public Health (CDPH) — Hantavirus
Primary state authority for hantavirus surveillance in California. Resources include Sin Nombre virus case documentation (~3 cases/year statewide at ~38% fatality rate), HEPA cleanup protocols for rodent-contaminated structures, and guidance for Sierra Nevada communities. Primary reference for our cleanup protocol standards.
CDC — Hantavirus Pulmonary Syndrome
Centers for Disease Control and Prevention HPS case surveillance data. Key cited data: 864 confirmed US HPS cases 1993–2022; approximately 35–38% case fatality rate; Sin Nombre virus as the primary western US strain; Pe. maniculatus as the primary reservoir. Includes documentation of the 2012 Yosemite National Park outbreak (10 cases, 3 deaths) that established the enclosed-space aerosolization transmission mechanism.
El Dorado County Public Health — Plague Surveillance Tahoe Basin
El Dorado County confirmed a human plague case in a South Lake Tahoe resident in August 2025. Their press release documents: 41 Tahoe Basin rodents exposed to plague 2021–2024; 4 additional plague-positive rodents in the Tahoe Basin in 2025; confirmation that “Plague is naturally present in many parts of California, including higher elevation areas of El Dorado County.”
US Forest Service — Lake Tahoe Basin Management Unit
USFS LTBMU explicitly states: “Bubonic Plague is naturally occurring in the Sierra Nevada including the Lake Tahoe Basin.” Primary official source for our plague risk communication specific to this ecosystem.
Snowfall, Climate & Research Data
Central Sierra Snow Lab (CSSL) — UC Berkeley, Donner Pass
Continuous snowfall records since 1929 — the longest Sierra Nevada snow record. Key data we cite: 30-year annual average 360.24 inches at the CSSL location; 2024–25 season total 341 inches (103% of 30-yr median); February 2026 storm — 111 inches in 5 days, documented as the 3rd-highest five-day total in CSSL history since 1970. Every structural freeze/thaw claim we make traces to CSSL data.
Astorga et al. — Hantavirus in Rodents US: Temporal and Spatial Trends (Ecosphere, March 2025)
Peer-reviewed study in Ecosphere (Wiley, March 2025) using NEON network data (104,379 captures, 14,004 blood samples, 49 species, 45 field sites, 2014–2019). Key findings: Pe. maniculatus highest hantavirus seroprevalence nationally (2.9%); peak captures May–August with sharp winter decline; confirmed Sierra Nevada spatial hantavirus clusters. Primary source for our seasonal activity charts.
CDC — Seroepidemiologic Studies of Hantavirus in California (Emerging Infectious Diseases)
Foundational CDC research establishing Sierra Nevada hantavirus geographic risk. Key findings: 26.8% antibody prevalence in deer mice near HPS case sites vs. 9.5% baseline; antibody prevalence increases above 1,200 meters elevation with documented Sierra Nevada spatial cluster. Truckee is at 1,774 meters. Supports every elevation-based risk statement we publish.
California Pest Control Licensing & Regulations
California Structural Pest Control Board (SPCB) — License Verification
The SPCB (CA Department of Consumer Affairs) licenses and regulates structural pest control in California. Branch 2 covers household pests including rodents. The public license lookup at pestboard.ca.gov allows anyone to verify a pest company’s current license status, license type, license number, and any disciplinary history. Our service is performed under SPCB Branch 2 license coverage.
UC IPM — University of California Integrated Pest Management Program
UC IPM publishes peer-reviewed pest management guidelines for California. Their Pest Notes for house mice, deer mice, roof rats, and Norway rats are the standard-of-care reference for California pest management professionals. We reference UC IPM for species biology, reproduction data, and management protocol standards throughout our content.
Placer Mosquito & Vector Control District — North Shore Rodent Surveillance
Serves Placer County including Tahoe City, Kings Beach, Carnelian Bay, and other North Shore communities. Conducts rodent surveillance for plague, hantavirus, and other rodent-borne diseases. Their statement: “Rodents and their fleas are capable of transmitting a variety of human diseases including plague, hantavirus and salmonella.” Tahoe Basin residents who find dead ground squirrels or chipmunks without obvious trauma: call (916) 558-1784.
Truckee Local Resources
Town of Truckee — Short-Term Rental Program
The Town of Truckee administers the STR permit program with a hard cap of 1,255 total registrations (fully reached, waitlist only since 2022). Authoritative source for: permit requirements, $428 annual renewal fee, 3-complaints-in-12-months revocation trigger, fines up to $5,000/day for operating without valid permit, and 365-day waiting period after property sale. Every STR permit statistic we publish traces to this program documentation.
Sierra Nevada Aquatic Research Laboratory (UCSB) — Hantavirus Protocol
UC Santa Barbara SNARL publishes hantavirus risk protocols for Sierra Nevada research facilities: “A strain of Hantavirus may be found in the deer mouse (Peromyscus maniculatus), the most common mouse in this region.” Referenced for protocol validation — the same HEPA and respiratory protection standards we apply.
Our Data Commitment — No Invented Statistics
Every statistic published across the Rodent Shield Truckee website traces to a verifiable source — agency press release, peer-reviewed study, government database, or industry data with a named publication date. We do not publish figures without attribution.
The 2024–2025 hantavirus death data (Sierra County 2024; Mono County 2025) traces to state public health reporting. The 26.8% deer mouse antibody prevalence traces to CDC Emerging Infectious Diseases. The 360-inch annual snowfall average traces to the Central Sierra Snow Lab. The 38% HPS fatality rate traces to CDC surveillance. The 111 inches in five days traces to the CSSL weather station at Donner Pass. Every number is the number.
Frequently Asked Questions — Resources & Data
Where does the 38% hantavirus fatality rate figure come from?
From CDC HPS case surveillance tracking confirmed cases and outcomes since surveillance began in 1993 through 2022 (864 total cases). Some sources cite 35–38% depending on the study period and case inclusion criteria. The CDPH California-specific figure is consistent with the national CDC figure. Both sources are accessible at the CDC hantavirus link above.
How do you know the February 2026 storm was the 3rd-highest five-day total in CSSL history?
The Central Sierra Snow Lab at Donner Pass (UC Berkeley) maintains continuous snowfall records. Their data includes annual summaries and notable event documentation. The February 2026 storm’s five-day total was documented by CSSL and reported in regional media at the time of the event. We cite this as “3rd-highest five-day total since CSSL record-keeping began in 1970” — the 1970 reference date reflects the period of continuous comparable measurement.
Is the 2025 Lake Tahoe rodent outbreak claim verifiable?
Yes. South Tahoe Now published coverage in August 2025 documenting the outbreak with specific attribution to North Shore Ace Hardware in Kings Beach (selling out of traps twice weekly) and a named pest control professional who described vacant second homes as “breeding hubs.” This is our primary source for the “worst in 15–20 years” characterization.
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