Spatial immunization to abate disease spreading in transportation hubs

Area of Science:

• Epidemiology
• Network Science
• Public Health

Background:

• Proximity social interactions are key to infectious disease transmission.
• Crowded locations like airports facilitate superspreading events due to constant human flow.
• Current transportation hubs prioritize efficiency over crowd management.

Purpose of the Study:

• To model disease spread in transportation hubs using real-world trajectory data.
• To identify contagion hotspots within airports.
• To propose and evaluate a spatial immunization strategy to mitigate disease transmission risks.

Main Methods:

• Analysis of anonymized individual trajectories in a major airport.
• Disease transmission modeling to pinpoint high-risk areas (hotspots).
• Simulation of a targeted spatial immunization policy.

Main Results:

• Identification of specific contagion hotspots within London Heathrow airport.
• Quantification of disease spread reduction achievable through spatial immunization.
• Detection of vulnerable destinations for airport-originated contagions.

Conclusions:

• Spatial immunization targeting identified hotspots is an effective strategy to reduce disease spread.
• The proposed method is generalizable to other crowded public spaces like train stations and convention centers.
• This approach can help prevent regional and global disease diffusion originating from transportation hubs.