https://www.americanthinker.com/blog/2020/04/covid_numbers_getting_redefined_again.html
In a world of “lies, damned lies, and statistics,” we should consult the SARS-Cov-2 (COVID-19) source data to understand the current numbers and the methodology for classifying new cases and deaths.
According to the CDC website, as of April 18, there were 690,714 total cases and 35,442 total deaths. A footnote says the total cases include 1,282 probable cases and the total deaths include 4,226 probable deaths, which is 12% of the total deaths after only four days of counting probable deaths. This is probably the result of the new definition of “probable death” (see below).
The CDC began counting confirmed and probable cases and deaths on April 14, two days before President Trump announced his plan for states to reopen the economy, based on guidance provided by the Council for State and Territorial Epidemiologists (CSTE) on April 5.
The guidance for probable COVID-19 cases and deaths includes three options: (1) meets clinical criteria and epidemiologic evidence with no confirmatory laboratory testing performed, (2) meets presumptive laboratory evidence and either clinical criteria or epidemiologic evidence, or (3) meets vital records criteria with no confirmatory laboratory testing performed.
This guidance includes definitions for clinical criteria, epidemiologic evidence, presumptive laboratory evidence, and vital records criteria, but the threshold for “probable” seems “possible” in some cases.