PMID- 37498787 OWN - NLM STAT- MEDLINE DCOM- 20230731 LR - 20230802 IS - 1545-861X (Electronic) IS - 0149-2195 (Print) IS - 0149-2195 (Linking) VI - 72 IP - 30 DP - 2023 Jul 28 TI - Geographic Distribution of Suspected Alpha-gal Syndrome Cases - United States, January 2017-December 2022. PG - 815-820 LID - 10.15585/mmwr.mm7230a2 [doi] AB - Alpha-gal syndrome (AGS) is an emerging, tick bite-associated allergic condition characterized by a potentially life-threatening immunoglobulin E (IgE)-mediated hypersensitivity to galactose-alpha-1,3-galactose (alpha-gal), an oligosaccharide found in most nonprimate mammalian meat and products derived from these mammals. Specific symptoms and severity of AGS vary among persons, and no treatment or cure is currently available. During 2010-2018, more than 34,000 suspected cases of AGS were identified in the United States, but current knowledge of where cases occur is limited. This study examined alpha-gal-specific IgE (sIgE) antibody testing results submitted to the commercial laboratory responsible for nearly all testing in the United States before 2022 to assess the geographic distribution and magnitude of this emerging condition. During January 1, 2017-December 31, 2022, a total of 357,119 tests were submitted from residences in the United States, corresponding to 295,400 persons. Overall, 90,018 (30.5%) persons received a positive test result in the study period, and the number of persons with positive test results increased from 13,371 in 2017 to 18,885 in 2021. Among 233,521 persons for whom geographic data were available, suspected cases predominantly occurred in counties within the southern, midwestern, and mid-Atlantic U.S. Census Bureau regions. These data highlight the evolving emergence of AGS and can be used to help state and local health agencies initiate surveillance and target public health outreach and health care provider education to high-risk localities. FAU - Thompson, Julie M AU - Thompson JM FAU - Carpenter, Ann AU - Carpenter A FAU - Kersh, Gilbert J AU - Kersh GJ FAU - Wachs, Tyler AU - Wachs T FAU - Commins, Scott P AU - Commins SP FAU - Salzer, Johanna S AU - Salzer JS LA - eng PT - Journal Article DEP - 20230728 PL - United States TA - MMWR Morb Mortal Wkly Rep JT - MMWR. Morbidity and mortality weekly report JID - 7802429 RN - X2RN3Q8DNE (Galactose) RN - 37341-29-0 (Immunoglobulin E) RN - red meat allergy SB - IM MH - Animals MH - Humans MH - United States/epidemiology MH - Galactose MH - *Food Hypersensitivity MH - *Tick Bites/epidemiology MH - Immunoglobulin E MH - Mammals PMC - PMC10390090 COIS- All authors have completed and submitted the International Committee of Medical Journal Editors form for disclosure of potential conflicts of interest. Scott P. Commins reports institutional support from the National Institute of Allergy and Infectious Diseases, National Institutes of Health; royalties from UpToDate, Inc.; payment or honoraria from Genentech for participation in educational events and from Regeneron for participation in an advisory meeting; and an unpaid position as president-elect of the Southeastern Allergy, Asthma, and Immunology Society. No other potential conflicts of interest were disclosed. EDAT- 2023/07/27 19:10 MHDA- 2023/07/31 06:43 PMCR- 2023/07/28 CRDT- 2023/07/27 13:02 PHST- 2023/07/31 06:43 [medline] PHST- 2023/07/27 19:10 [pubmed] PHST- 2023/07/27 13:02 [entrez] PHST- 2023/07/28 00:00 [pmc-release] AID - mm7230a2 [pii] AID - 10.15585/mmwr.mm7230a2 [doi] PST - epublish SO - MMWR Morb Mortal Wkly Rep. 2023 Jul 28;72(30):815-820. doi: 10.15585/mmwr.mm7230a2.