ATS-IDSA guidelines
As Dr. Deshpande noted, the American Thoracic Society and the Infectious Diseases Society of America guidelines recommend testing and empiric treatment of influenza in patients hospitalized with CAP. “Testing more inpatients especially during the flu season can reduce other diagnostic testing and improve antimicrobial stewardship,” Deshpande noted.
Thus, while the rate of testing for influenza did increase over the 5-year study interval, “there is substantial room for improvement,” he added, as a positive test clearly does trigger the need for intervention. As Dr. Deshpande also noted, the past two influenza seasons have been mild, but influenza activity has again picked up lately again in many parts of the United States.
With the COVID-19 pandemic overwhelming influenza over the past few years, “differentiating between the two based on symptoms alone can be challenging,” he acknowledged, “and clinicians will need to test and treat accordingly.” This is particularly important given that this study clearly indicates that early treatment with an antiviral can lower the risk of short-term mortality in hospitalized CAP patients.
One limitation of the study was the lack of data on time of symptom onset, which may be an important confounder of the effect of oseltamivir on outcomes, the authors point out. Asked to comment on the findings, Barbara Jones, MD, University of Utah Health, Salt Lake City, noted that timely antivirals for patients with influenza are highly effective at mitigating severe disease and are thus strongly recommended by practice guidelines.
“However, it is hard for clinicians to keep influenza on the radar and change testing and treatment approaches according to the season and prevalence [of influenza infections],” she said in an interview. “This is an important study that highlights this challenge.
“We need a better understanding of the solutions that have been effective at improving influenza recognition and treatment, possibly by studying facilities that perform well at this process,” she said.
Dr. Deshpande reported receiving research funding to his institution from the Clorox Company and consultant fees from Merck.
A version of this article first appeared on Medscape.com.