The return on investment of up to $4,637 per vaccination course translates to billions of dollars in net monetary benefits to society, the authors say.
Moreover, 1 in 12 of infected patients (8.5%) had no documented underlying cardiovascular disease.
Outpatient visits for flulike illness is below the national baseline for the first time since October.
The company said it will submit data to regulatory agencies for potential approval in adults ages 18 and older.
With the drop in flu activity gaining momentum, several parts of the US are now below their regional baselines.
Advice includes optimizing HVAC systems and other steps to improve air quality and circulation.
Flu indicators declined last week, as COVID wastewater detections declined to the low level.
Pakistan also reported several WPV detections in environmental samples from five locations.
Some states in the Central and Midwest regions are reporting high or very high flu activity.
A total of 7% of infants in the vaccine group were born early, compared with 5% in the placebo group, a 37% difference.
