Technical comment on The impact of population-wide rapid antigen testing on SARS-CoV-2 prevalence in Slovakia

TL;DR

This paper critiques a study claiming that Slovakia's rapid antigen testing significantly reduced COVID-19 prevalence, arguing that the original estimate is exaggerated and the actual impact was limited and short-lived.

Contribution

It provides a critical analysis of prior claims about the effectiveness of population-wide antigen testing in Slovakia, highlighting methodological flaws and overestimations.

Findings

Original estimate of 58% prevalence reduction is exaggerated

The actual impact of testing was limited and short-term

Methodological flaws in the original study are identified

Abstract

Pavelka et al. (Science, Reports, 7 May 2021) claim that a single round of population-wide antigen testing in Slovakia reduced the observed COVID-19 prevalence by 58%, and that it played a substantial role in curbing the pandemic. We argue that this estimate, which is based on incorrect assumptions, is exaggerated, and that the relief was short-lived with little effect on mitigating the pandemic.