Why mosquitoes bite some people more and easy prevention tips

A new study published in Science Advances sheds light on why certain individuals are more prone to mosquito bites, focusing on the behaviour of Aedes aegypti, one of the most widespread and disease-carrying mosquito species, as quoted by TOI

Researchers found that mosquitoes rely on a combination of visual and chemical cues, particularly contrast and carbon dioxide, to identify and approach human hosts. The findings are expected to aid in developing more targeted mosquito control strategies.

What attracts a mosquito to a person

The study, titled ‘Predicting mosquito flight behaviour using Bayesian dynamical systems learning,’ highlights how mosquitoes integrate multiple sensory signals. Visual contrast plays a key role, with darker objects proving more attractive than lighter ones.


However, visual cues alone are not sufficient. Carbon dioxide, exhaled by humans, acts as a long-range signal that directs mosquitoes toward potential hosts. When combined, these cues significantly increase the likelihood of mosquitoes approaching a target.

Mosquitoes act independently, not as a swarm

To further validate the findings, researcher Christopher Zuo participated as a human subject, wearing outfits in different colour patterns. Observations showed that mosquito activity was concentrated around the head and shoulders—areas associated with higher carbon dioxide output and body heat.

Analysis by researchers at Massachusetts Institute of Technology confirmed that mosquitoes do not follow each other or move in coordinated groups. Instead, each insect independently responds to environmental cues, creating only the illusion of swarm behaviour.

How to prevent mosquito bites

The study outlines several strategies to minimise mosquito bites:

• Wear lighter-coloured clothing to reduce visual attraction
• Limit use of strong scents such as perfumes and lotions
• Use traps or devices that mimic sensory cues like carbon dioxide
• Avoid prolonged outdoor exposure during peak mosquito activity, especially at dusk and dawn

These findings provide a clearer understanding of mosquito behaviour and could help improve both personal protection and broader pest control measures.

Controlled experiments track mosquito flight patterns

Scientists at Georgia Institute of Technology conducted a series of controlled experiments in a specialised chamber containing hundreds of mosquitoes. Using 3D infrared cameras, they tracked detailed flight trajectories.

Initial tests using black-and-white spheres showed limited interaction unless carbon dioxide was introduced. The presence of carbon dioxide led to a marked increase in activity, with black objects paired with the gas attracting the highest number of approaches.