Chicago Department of Public Health’s respiratory surveillance report for week 51 has been published. Please see the attachment for the full report.

A new Respiratory Illness Dashboard is now available on the CDPH website. This dashboard summarizes information about respiratory virus disease activity in Chicago, with a focus on COVID-19 (caused by the SARS-CoV-2 virus), influenza, and respiratory syncytial virus (RSV). The dashboard will be updated every Friday at 1pm.

Weekly Surveillance Key Points

Flu activity continues to rapidly increase across Chicago, and RSV activity is very high; COVID-19 activity is increasing but remains low at this time.
The percentage of emergency department (ED) visits and hospital admissions for flu are rapidly increasing across every age group. ED visits for RSV are very high and continue to increase especially among children <5 years of age. ED visits for COVID-19 remain low but are continuing to increase modestly.
The percentage of specimens that tested positive for RSV increased from 12.7% to 14.9%. Test positivity for COVID-19 increased from 3.1% to 4.6%. Influenza test positivity increased from 6.5% to 11.2%. Among influenza A specimens subtyped so far this season, most have been influenza A(H1N1)pdm09 but it is too early in the season to know what the predominant subtype will be.
Flu wastewater concentrations continue to increase and are at moderate levels, and RSV concentrations remain high. COVID-19 concentrations are low but increasing.
The respiratory season is here. Vaccines are the best way to protect yourself and others from severe disease. Other ways to protect yourself can be found here and here.
For information on the national bird flu outbreak, see: H5 Bird Flu: Current Situation.

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