K-value

A measure of how a disease clusters. The smaller the K-value, the smaller the number of people who transmit the infection to large numbers in superspreader events.
 

The K-value estimates for COVID-19 are as low as 0.1. This indicates that the vast majority of new infections were acquired from about 10% of those already infected.  

Categories:

Infectious Disease Transmission

Cross-reference:

ClusterSuperspreader eventCOVID-19