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Portuguese Journal of Public Health

Print version ISSN 2504-3137On-line version ISSN 2504-3145

Abstract

PEIXOTO, Vasco Ricoca; NUNES, Carla  and  ABRANTES, Alexandre. Epidemic Surveillance of Covid-19: Considering Uncertainty and Under-Ascertainment. Port J Public Health [online]. 2020, vol.38, n.1, pp.23-29. ISSN 2504-3137.  https://doi.org/10.1159/000507587.

Epidemic surveillance is a fundamental part of public health practice. Addressing under-ascertainment of cases is relevant in most surveillance systems, especially in pandemics of new diseases with a large spectrum of clinical presentations as it may influence timings of policy implementation and public risk perception. From this perspective, this article presents and discusses early evidence on under-ascertainment of COVID-19 and its motifs, options for surveillance, and reflections around their importance to tailor public health measures. In the case of COVID-19, systematically addressing and estimating under-ascertainment of cases is essential to tailor timely public health measures, and communicating these findings is of the utmost importance for policy making and public perception.

Keywords : COVID-19; Surveillance; Under-ascertainment; Under-reporting; Surveillance system sensitivity.

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