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Paradigm Shift Intervention Monitoring
& Influenza Death Rate Spikes to Epidemic Levels
The CDC had previously reported 4 trH3N2 cases (in Indiana and Pennsylvania) and two of the four had been listed as unsubtypable, which would have been due to registering a influenza A positive, but negative for seasonal H3 or pandemic H1. The week 37 report had eliminated the two unsubtypable, raising concern that these cases were being reported a false negatives and therefore removed from FluView reports. These adjustment were accompanied by a report of just 3 confirmed cases for the entire country, in spite of increase in Google FluTrends for multiple US cities, as well is a spike in ILI cases as a percentage of emergency department visits in Minnesota.
Thus, alternate measures of influenza cases and deaths indicated the 3 cases reported for week 37 in FluView were a gross underestimate of flu activity in the United States, and the increase in the P&I death rate raised additional concern that widespread trH3N2 cases were being falsely reported as influenza A negatives.