Three pre-vaccine responses to Covid-like epidemics

Area of Science:

• Epidemiology
• Mathematical Modeling
• Public Health

Background:

• Emergence of highly transmissible pathogens in metropolitan areas.
• Need for realistic models to understand outbreak dynamics.
• Inspiration from recent global health events, including the SARS-CoV-2 pandemic.

Purpose of the Study:

• To develop and analyze a conceptual SEIQR model for epidemic control.
• To project epidemic trajectories under different control strategies.
• To assess the impact of population response on epidemic outcomes and economic recovery.

Main Methods:

• Utilized a time-dependent dynamical system with feedback-control, a variant of the SEIQR model.
• Simulated outbreak scenarios in metropolitan areas.
• Analyzed three distinct epidemic control strategies post-initial surge and pre-vaccine availability.

Main Results:

• Model outputs demonstrated qualitative and quantitative similarities to real-world events in Spring 2020.
• Projected outcomes varied significantly based on the control strategies implemented.
• Economic recovery and total infected population were highly sensitive to chosen interventions.

Conclusions:

• Epidemic trajectories are not solely determined by viral characteristics.
• Population response and public health interventions play a critical role in shaping epidemic outcomes.
• Strategic control measures can significantly influence both public health and economic recovery.