Evaluating COVID‐19 Transmission in a Series of Cases and Contacts in Three Municipalities of Colombia: Insights From the WHO First Few X Protocol, August 2020–January 2021

Key Points

• This research aims to assess COVID-19 transmission rates among cases and contacts using the WHO FFX protocol in Colombia.
• Utilized the WHO First Few X (FFX) protocol for data collection.
• Conducted case and contact tracing in three municipalities.
• Analyzed transmission rates and incubation periods among contacts.
• Transmission rates were significant and similar to global findings.
• Incubation periods among contacts aligned with worldwide data.
• Identified limitations in selection bias toward severe cases.

Abstract