Atlanta, GA: Based on National Center for Health Statistics (NCHS) mortality surveillance data available on January 25, 2018, 9.1% of the deaths occurring during the week ending January 6, 2018 (week 1) were due to P&I. This percentage is above the epidemic threshold of 7.2% for week 1.

Background: Weekly mortality surveillance data include a combination of machine coded and manually coded causes of death collected from death certificates.  Percentages of deaths due to P&I are higher among manually coded records than more rapidly available machine coded records. Due to the additional time needed for manual coding, the initially reported P&I percentages may be lower than percentages calculated from final data.  Previous longer backlogs in manual coding have been resolved and death records are now coded within 10 days from receipt of a death record by NCHS.

Region and state-specific data are available at http://gis.cdc.gov/grasp/fluview/mortality.html.