Learning during a crisis: The SARS epidemic in Taiwan

Area of Science:

• Epidemiology
• Public Health
• Behavioral Economics

Background:

• The 2003 Severe Acute Respiratory Syndrome (SARS) outbreak in Taiwan caused a national health crisis.
• Public fear led to a significant decline in healthcare-seeking behavior, with outpatient visits dropping over 30%.

Purpose of the Study:

• To investigate the roles of public information and peer behavior in shaping public reaction to the SARS crisis.
• To quantify the impact of social interactions on public response during an epidemic.

Main Methods:

• Utilized a difference-in-difference analysis comparing longtime residents and recent arrivals to identify peer effects.
• Employed dynamic simulations based on regression analysis to model the magnification of public response.

Main Results:

• Found that individuals responded to both official public health information and the actions/opinions of their peers.
• Identified a significant peer effect, suggesting social learning played a role in public behavior.
• Demonstrated that social interactions substantially amplified the public's reaction to SARS.

Conclusions:

• Public response to health crises is influenced by a combination of public information and social dynamics.
• Peer influence and social learning are critical factors in epidemic response.
• Interventions aimed at managing public behavior during epidemics should consider social network effects.