Survey on Hantavirus Awareness

[Survey Findings]

- Only 10.8% of respondents know "what Hantavirus is." - The most common response was "have only heard the name" at 38.6%. 22.5% "have never heard of it." - Of those who know of it in some way, 63.7% answered they feel "anxious." - "Very anxious" accounted for 22.6%, and "somewhat anxious" 41.1%. There is a tendency for those with higher awareness to feel more anxious. - Regarding perceived transmission routes, the highest was "infected by touching rodent feces/urine" at 59.4%. - This was followed by "inhaling dust" at 56.3%, while a certain number also chose mosquitoes (7.2%) and human-to-human transmission (38.8%). - Regarding experience with wild rodents, 61.6% answered they "have never experienced any." - The most common experience among the rest was "saw one in a park, riverbed, or street" at 15.8%. - The most recognized preventive measure believed to be correct was "wearing a mask" at 52.7%. - On the other hand, 15.9% chose vacuuming/sweeping, and 30.3% answered "don't know."

[Survey Overview]

Survey Method: Web-based survey using the questionnaire system operated by Neo Marketing Inc. Survey Target: Men and women aged 20-69 nationwide Valid Responses: 1,000 Survey Period: May 22 - May 25, 2026 Survey Organization: Neo Marketing Inc. (Listed on the Tokyo Stock Exchange Standard Market) * This survey investigated consumer "awareness" and does not indicate medical preventive measures.

Hantavirus Awareness: About 11% "know what it is." The majority, about 39%, "have only heard the name."

Do you know about "Hantavirus"? (n=1,000) - Know what it is: 10.8% - Somewhat know: 28.1% - Have only heard the name: 38.6% - Have never heard of it: 22.5%

Only 10.8% answered they "know what it is," confirming that only a minority grasp the details. Conversely, "have only heard the name" was the most common response at 38.6%, suggesting the name is preceding actual understanding. Including the 28.1% who "somewhat know," 77.5% have been exposed to the name in some way, while 22.5% "have never heard of it," indicating a wide variance in the depth of awareness.

Anxiety toward Hantavirus: About 64% of those aware feel "anxious." Those more familiar with the details tend to feel more anxious.

How do you feel about Hantavirus? *Respondents: Those who know about Hantavirus in some way (n=389) - Very anxious: 22.6% - Somewhat anxious: 41.1% - Neither: 18.5% - Not very anxious: 12.3% - Not anxious at all: 5.4%

Combining "very anxious" (22.6%) and "somewhat anxious" (41.1%), 63.7% feel anxious, confirming that the majority of those aware harbor anxiety. Only 17.7% do not feel anxious (combining 12.3% "not very anxious" and 5.4% "not anxious at all"). The structure suggests that the more people are exposed to the details rather than just the name, the more their sense of the unknown manifests as anxiety.

Perception of Transmission Routes: The highest is "touching feces/urine" at about 60%. A certain number also do not know.

How do you think Hantavirus is transmitted to humans? (Multiple answers) *Respondents: Those who know in some way (n=389) - Infected by touching rodent feces/urine: 59.4% - Infected by inhaling dust mixed with rodent feces/urine: 56.3% - Infected by being bitten by wild rodents/field mice: 41.6% - Spreads from an infected person to another person: 38.8% - Infected by consuming contaminated food/drinking water: 17.7% - Infected by mosquito bites: 7.2% - Don't know: 8.2%

"Touching feces/urine" (59.4%) and "inhaling dust" (56.3%) occupied the top spots, confirming that the understanding of infection via rodent excrement has penetrated to a certain degree. On the other hand, answers such as "spreads from an infected person to another person" (38.8%) and "infected by mosquito bites" (7.2%) were also seen among a certain number. Understanding varies even among those who are aware of the virus.

Experience with Wild Rodents: About 62% have "no experience." Among those with experience, "park/riverbed/street" was the most common.

Experience seeing or coming into contact with wild rodents (Multiple answers, n=1,000) - Have never experienced any of the above: 61.6% - Have seen them in parks, riverbeds, or streets: 15.8% - Have seen what appeared to be rodent feces/urine: 9.2% - Have entered abandoned houses, warehouses, old buildings, etc.: 8.7% - Have appeared (seen traces) under the floor, in the ceiling, storage room, etc., of my home: 8.4% - Have seen them during agricultural work, in home gardens, or fields: 7.2%