New data from the US CDC estimates the number of people worldwide who die of influenza-related lung conditions each year could be as many as 650,000.

The CDC said between 291,000 and 646,000 people die from seasonal flu-linked respiratory illnesses. Earlier projections from the World Health Organization’s earlier projections of deaths from seasonal flu — 250,000 to 500,000 per year — “are outdated,” according to the study published Wednesday in The Lancet.

…These revised estimates could prompt greater adoption of better methods of diagnosing and tracking flu strains around the world.

Read more at www.pbs.org