5 serotypes are most chargeable for foodborne outbreaks in hen
4 September 2024
2 minute learn
Editor’s word: the next is from a presentation by Katherine
Marshall, MPH, and colleagues, U.S. Facilities for Illness Management and Prevention,
throughout the 2024 annual assembly of the American Affiliation of Avian
Pathologists.
Salmonella causes an estimated 1.03 million foodborne infections
within the U.S. every year, and over 40% are attributed to the consumption of
contaminated hen, turkey, beef, and pork. Though greater than 2,500 Salmonella
serotypes have been described, the highest 20 trigger almost 70% of U.S. Salmonella
infections.
Most Salmonella
infections aren’t linked to a acknowledged outbreak, however outbreak knowledge present
definitive hyperlinks to particular meals sources. To find out which serotypes trigger
probably the most outbreak sicknesses related to particular meals merchandise and inform
prevention measures, we developed an strategy to categorize serotypes utilizing
outbreak sickness burden (excessive, average, low) and trajectory (elevated,
steady, decreased).
Knowledge had been collected from Salmonella
outbreaks reported to CDC’s Foodborne Illness Outbreak Surveillance System
throughout 2012-2021 with a single confirmed or suspected meals automobile of hen,
turkey, beef, or pork. For every meat and poultry kind, the variety of
outbreak-associated sicknesses had been calculated for every serotype. Serotypes had been
thought-about highest precedence for outbreak prevention in the event that they had been labeled as
excessive burden (≥seventy fifth percentile for variety of outbreak sicknesses amongst that
product kind throughout 2017-2021) and having an elevated trajectory (sicknesses
elevated ≥50% from 2012-2016 to 2017-2021).
Throughout 2012-2021, we recognized
192 foodborne outbreaks linked to hen, turkey, pork, and beef leading to
7,077 sicknesses, 1,330 hospitalizations, and 9 deaths. Of those, 88 (46%)
outbreaks and a pair of,935 (41%) sicknesses had been attributed to hen and 24 (13%)
outbreaks, and 1,188 (17%) sicknesses had been attributed to turkey.
For hen, sicknesses had been
attributable to 19 serotypes. The serotypes Enteritidis, Infantis, and Blockley had
excessive outbreak burden and elevated trajectory so had been thought-about highest
precedence for outbreak prevention; Typhimurium and Braenderup had been labeled as
average outbreak burden and elevated trajectory and had been additionally thought-about excessive
precedence.
For turkey, sicknesses had been
attributable to 12 Salmonella serotypes, with two (Enteritidis, Studying),
thought-about highest precedence and one (Hadar) with average burden and elevated
trajectory, thought-about excessive precedence for outbreak prevention. Two serotypes
had been recognized to be not too long ago emerged (precipitated outbreak sicknesses throughout
2017-2021 however not throughout 1998-2011) for hen (Blockley, Anatum) and two had been
recognized for turkey (Anatum, Schwarzengrund).
By figuring out and publishing
outbreak sickness burden and trajectory knowledge yearly, our aim is to facilitate
prioritization of serotypes for prevention of outbreaks. Intensified prevention
measures could also be thought-about for serotypes with each excessive or average burden and
elevated trajectory.
These outcomes can be found to
the general public on CDC’s BEAM dashboard: https://www.cdc.gov/ncezid/dfw…
