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Table 2 List of the thirteen alleged myths and proportion of residents that believed in each of them

From: Strengthening the perception-assessment tools for dengue prevention: a cross-sectional survey in a temperate region (Madeira, Portugal)

Essential topic

Alleged myth

n (%)

Medical importance

Myth 1

“Mosquitoes only cause mild clinical consequences such as allergies, fever, etc”.

643 (54 · 4)

Myth 2

“Mosquitoes do not transmit diseases”.

162 (13 · 7)

Local risk

Myth 3 and Myth 4

“Dengue is not a mosquito-borne disease” and/or “Dengue only occur in tropical/non-developed countries”.

222 (18 · 8)

Myth 5 and Myth 6

“Since I do not feel the byte, I am not at risk of being bitten/infected” and/or “Mosquitoes are allocated in a specific area and are not able to spread through the island”.

188 (15 · 9)

Myth 7

“Madeira’s residents are not at risk”.

590 (49 · 9)

Domestic attribute

Myth 8

“Local health authorities are the key intervenient in the control of mosquitoes”.

76 (6 · 4)

Myth 9

“Insecticides or other protective measures can control mosquitoes”.

543 (45 · 9)

Myth 10

“I am (Community is) not an intervenient in the aegypti-control”.

590 (49 · 9)

Mosquito breeding

Myth 11 and Myth 12

“Clean houses or houses without pets/animals do not have mosquitoes” and/or “Clean people have nothing to do concerning the control of mosquitoes”.

714 (60 · 4)

Control measures

Myth 13

“By the usage of insecticides and/or flyswatter, I am already contributing to the aegypti-control”.

942 (79 · 7)

  1. Based on the analysis of the discrepant knowledge showed concerning topic-related concepts, false assumptions/myths were inferred to be present in the scored population (see Myths’ estimation and Myth’s appearance on Additional files).
  2. Average of believed myths per scored resident: four out of the thirteen myths.
  3. Proportion of scored residents that believed in at least one alleged myth: 99 · 5%.