Before revision:  We use the branching-process approach for contact tracing to analyze the impact of super-spreader events on the effect of contact tracing  . Roughly speaking, we find that contact tracing is more efficient in the presence of super-spreaders if the fraction of symptomatics is small, the tracing probability is high, or the latency period is distinctively larger than the incubation period.
After revision:  We use the branching-process approach for contact tracing to analyze the impact of super-spreader events on the effect of contact tracing . Here we neglect a tracing delay . Roughly speaking, we find that contact tracing is more efficient in the presence of super-spreaders if the fraction of symptomatics is small, the tracing probability is high, or the latency period is distinctively larger than the incubation period.