# Infectious Disease Doctors Explain the Difference Between Hantavirus and COVID-19—and How They Spread
Recent concerns about hantavirus have sparked confusion about how it compares to COVID-19. Infectious disease specialists clarify that these are fundamentally different pathogens with distinct transmission routes and health impacts.
Hantavirus and SARS-CoV-2 (which causes COVID-19) belong to separate virus families and spread through different mechanisms. COVID-19 primarily transmits person-to-person through respiratory droplets when infected people breathe, talk, cough, or sneeze. Hantavirus, by contrast, spreads mainly through contact with infected rodent droppings, urine, or saliva. People contract hantavirus when they inhale aerosolized particles from contaminated materials, not from other people.
The clinical presentations differ sharply. COVID-19 typically begins with respiratory symptoms like cough, fatigue, and fever, though it can affect multiple organ systems. Hantavirus causes a more severe condition called hantavirus pulmonary syndrome (HPS), which starts with fever, muscle aches, and gastrointestinal symptoms before progressing to respiratory distress. HPS carries a fatality rate around 38 percent, significantly higher than COVID-19's case fatality rate in vaccinated populations.
Prevention strategies reflect these differences. For COVID-19, vaccination, masking, and physical distancing remain effective. For hantavirus, prevention centers on rodent control and proper cleaning protocols. People should avoid sweeping or vacuuming rodent-contaminated areas, which can aerosolize particles. Instead, they should spray the area with disinfectant, let it sit, then carefully clean it up.
Geographic distribution also varies. Hantavirus cases remain rare in the United States,