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This Portland man is getting his flu shot. You should too. Staff Photo by Carl D. Delivered Fridays. Thanks for signing up! Check your inbox for a welcome email. Email required. By signing up, you agree to our Privacy Notice and European users agree to the data transfer policy. For more newsletters, check out our newsletters page. The Latest. Animals need infrastructure, too By Ben Goldfarb. The big questions about Covid booster shots By German Lopez. The dual waves resulted in a protracted season during — that was less severe when compared with peak activity in — but resulted in a similar burden of illness in children by the end of the season.
During the — season, deaths in children with laboratory—confirmed flu virus infection were reported in the United States 8. However, flu-related pediatric deaths are likely under-reported as not all children whose death was related to an flu virus infection may have been tested for flu 9, By combining data on hospitalization rates, flu testing practices, and the frequency of death in and out of the hospital from death certificates, we estimate that there were approximately deaths associated with flu in children during — Our estimates of hospitalizations and mortality associated with the — flu season continue to demonstrate how serious flu virus infection can be.
We estimate, overall, there were , hospitalizations and 28, deaths during the — season. An estimated 6, deaths occurred among working age adults aged 18—64 years , an age group that often has low flu vaccination uptake First, national rates of flu-related hospitalizations and in-hospital death were adjusted for the frequency of flu testing and the sensitivity of flu diagnostic assays, using a multiplier approach 3.
However, flu testing practices at sites that contribute to our FluSurv-NET surveillance system may not be representative of flu testing practices for the entire United States.
Second, estimates of flu-related illness and medical visits are based on a ratio of illnesses to hospitalizations determined in a prior study. This ratio is based on data from prior seasons, which may not be accurate if patterns of care-seeking have changed.
Third, our estimate of flu-related deaths relies on information about location of death from death certificates to calculate ratios of deaths occurring in the hospital to deaths occurring outside of the hospital by categories of causes of death. However, death certificate data during the — season were not available at the time of estimation. We used death certification data from all flu seasons from — through — where these data were available from the National Center for Health Statistics.
Next, to account for deaths occurring outside of a hospital, we use information from national death certificates to calculate the proportion of deaths from these causes that occur in and out of the hospital. Note: See Frequently Asked Flu Questions for Influenza Season for flu and flu vaccine information specific to the current flu season. The influenza season was a high severity season with high levels of outpatient clinic and emergency department visits for influenza-like illness ILI , high influenza-related hospitalization rates, and elevated and geographically widespread influenza activity for an extended period.
In , CDC began using new methodology to classify seasonal severity and applied the methodology to the through seasons. The season was the first season to be classified as a high severity across all age groups. During the season, influenza-like-illness ILI activity began to increase in November, reaching an extended period of high activity during January and February nationally, and remained elevated through the end of March.
ILI peaked at 7. Influenza-like illness ILI was at or above the national baseline for 19 weeks, making the season one of the longest in recent years. While flu deaths in children are reported to CDC, flu deaths in adults are not nationally notifiable.
This system tracks the proportion of death certificates processed that list pneumonia or influenza as the underlying or contributing cause of death. This system provides an overall indication of whether flu-associated deaths are elevated, but does not provide an exact number of how many people died from flu. During the past five seasons, the average number of weeks this indicator was above threshold was 11 range of 7 to 15 weeks.
CDC estimates that from to , influenza-associated deaths in the United States ranged from a low of 12, during to a high of 56, during Death certificate data and weekly influenza virus surveillance information was used to estimate how many flu-related deaths occurred among people whose underlying cause of death on their death certificate included respiratory or circulatory causes.
Home Health and social care Public health Health protection Immunisation. Official Statistics Annual flu reports. Request an accessible format. If you use assistive technology such as a screen reader and need a version of this document in a more accessible format, please email publications phe.
Please tell us what format you need. It will help us if you say what assistive technology you use. Flu annual report: winter to PDF , 2. Flu annual report: winter to PDF , 1. Flu annual report: winter to PDF , KB , 29 pages This file may not be suitable for users of assistive technology.
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