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the claim
Mosquitoes are preferentially attracted to Type O blood
the verdict
REFUTED
the evidence says no
refutedsupported
the weight of evidence
0 sources for · 2 against

Controlled laboratory studies investigating mosquito host preferences across different human blood groups demonstrate that mosquitoes do not exhibit a preferential attraction to Type O blood, instead showing stronger behavioral attraction toward other blood groups such as Type B.

Evidence against · 2
Host-seeking behavior and fecundity of the female Aedes aegypti to human blood types.
2022 · cited by 8
<h4>Background</h4>Mosquitoes express different degrees of preference towards hosts depending on behavioral, ecological, and physiological factors. These preferences have implications for mosquito-borne disease risk. This study investigated the effect of human blood groups on the behavior and fecundity of the female Aedes aegypti (Diptera: Culicidae) from March 2018 to August 2019. In laboratory tests, mosquitoes were fed artificial membrane feeders on A, AB, B, and O blood groups. The level of attraction to different blood groups was tested under controlled conditions with a wind tunnel bioassay.<h4>Results</h4>The responses of Ae. aegypti to the blood groups treatments in the five-choice tunnel chambers showed a significant preference (Kruskal-Wallis (2 = 85.772, df = 4, P < 0.0001) for favor blood group B. Also, the response of Ae. aegypti to olfactory cues (filth) derived from a pool of volunteers cutting across the blood groups showed a similar preference for pattern towards the blood group B. The percentage rate of digestibility in Ae. aegypti was highest in those fed on blood group O, while individuals fed on the AB blood group had the lowest digestion rate. Thus, the rate of digestibility highly varied significantly (P < 0.0001) between blood groups. Overall, Ae. aegypti fed on blood group B had the highest average feeding rate, number of females with eggs, and fecundity level, which showed a significant difference (P < 0.0001) on preferred.<h4>Conclusion</h4>This study provides novel insight into the ABO host choice of Ae. aegypti and reinforces the need for personal protection against dengue virus transmission in light of the increased risk of exposure for individuals with B blood type. © 2021 Society of Chemical Industry.
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rails:sufficiency:refuted:for=0+0p:against=2+0p | v55:sufficiency

More against · 1
RETRACTED ARTICLE: Human blood type influences the host-seeking behavior and fecundity of the Asian malaria vector Anopheles stephensi
2021 · cited by 5
The nutritional requirements of mosquitoes include both sugar (generally derived from the nectar of flowers) and blood (humans or animals). Mosquitoes express different degrees of preferences towards hosts depending on behavioral, ecological, and physiological factors. These preferences have implications for mosquito-borne disease risk. The present study is directed to reveal the effect of the human blood groups on the fecundity and fertility of the malaria vector Anopheles stephensi. In laboratory tests, mosquitoes were fed on ABO blood groups via artificial membrane feeders, and the level of attraction against different blood groups was tested by the electroantennogram and wind tunnel bioassay under control conditions. Results indicate that the female mosquitoes had a strong preference towards the blood group B, while in the case of females fed on O blood group had the highest digestibility rate. Overall, the human blood type had a significant impact on the fecundity and fertility of female An. stephensi. The highest numbers of eggs are laid, in the case of blood group B, (mean (± SD)) 216.3 (8.81) followed by the AB, 104.06 (7.67), and O, 98.01 (7.04). In the case of blood group B, females attain the highest fertility of about 92.1 (9.98). This study provides novel insight into the ABO blood type host choice of the mosquitoes that are still partially unknown and suggests encouraging personal protection for relevant individuals within communities at risk, which is a useful tool for preventing malaria where the An. stephensi is present as a dominant vector.
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  1. Host-seeking behavior and fecundity of the female Aedes aegypti to human blood types.peer-reviewedno side taken
  2. RETRACTED ARTICLE: Human blood type influences the host-seeking behavior and fecundity of the Asian malaria vector Anopheles stephensipeer-reviewedno side taken
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