Influenza activity remains high, according to the CDC's weekly surveillance report, but mortality is below the epidemic threshold.
The US Centers for Disease Control and Prevention (CDC) report that US influenza activity is still high and rose again during the week ended Saturday, February 8. Activity had fallen slightly during the first 2 weeks of the new year but has increased over the last 4 weeks.The CDC reports in the Weekly US Influenza Surveillance Report published February 14 that during the 2019-2020 flu season there have been at least 26 million influenza cases, 250 000 hospitalizations, and 14 000 deaths. Adults aged â¥65 years continue to be hospitalized at the highest rate.The brief slide series below summarizes the most recent report.
CDC Report 2/14/20. US influenza activity remains high and rose again during the week ended February 8 (wk 6). Regionally, the percentage of outpatient visits ranged from 3.6% - 10.8% and all regions were above their baselines.
Hospitalization Rate. Cumulative hospitalization rate was 41.9 per 100 000 population - similar to that seen at this time of year during recent previous influenza seasons. The highest rate is still seen among adults aged ≥65 yrs.
Hospitalization Rates by Age Group. Rates in children and young adults are higher this season than at the same time in previous flu seasons, according to the CDC.
Underlying Conditions in Hospitalized Adults. The most frequently reported underlying conditions among adults hospitalized for influenza are cardiovascular disease, metabolic disorder, obesity, and chronic lung disease.
Underlying Conditions in Hospitalized Children. The most frequently reported underlying condition among children hospitalized for influenza is asthma.
Mortality Below Epidemic Threshold. The percentage of deaths attributed to pneumonia and influenza is 6.8%, below the epidemic threshold of 7.3%. Fourteen influenza-associated pediatric deaths occurring during 2019-2020 season were reported this week.
Pediatric Mortality. Total pediatric deaths for the season is 92; 62 are linked to to influenza B (B/Victoria) viruses and 30 to influenza A viruses.
The CDC continues to recommend vaccination, even at this point in the flu season, as the best way to prevent flu, prevent spreading flu, and prevent its serious complications.
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