Updated Nov. 16, 2021 To better reflect the full burden of COVID-19, CDC provides
estimates of COVID-19 infections, symptomatic illnesses, hospitalizations, and deaths using
statistical models to adjust for cases that national surveillance networks do not capture for a
number of reasons. These estimates and the methodologies used to calculate them are
published in Clinical Infectious Diseasesexternal icon and The Lancet Regional Health–
Americasexternal icon. These estimates will be updated periodically.

Background The problem of dealing with misreported data is very common in a wide range
of contexts for different reasons. The current situation caused by the Covid-19 worldwide
pandemic is a clear example, where the data provided by official sources were not always
reliable due to data collection issues and to the high proportion of asymptomatic cases. In
this work, a flexible framework is proposed, with the objective of quantifying the severity of
misreporting in a time series and reconstructing the most likely evolution of the process …