Healthcare-Associated Infections-Community Interface (HAIC): Emerging Infections Program (EIP) Network Report : Invasive Staphylococcus aureus, 2016

Methicillin-resistant Staphylococcus aureus (MRSA): California (3 county San Francisco Bay area); Connecticut; Georgia (8 county Atlanta area); Maryland (Baltimore City and County); Minnesota (2 metro Twin City counties); New York (1 Rochester county); Tennessee (1 Nashville county). Note: The population under surveillance changed from 2015; it was increased by 2 Maryland counties.Methicillin-sensitive Staphylococcus aureus (MSSA): California (3 county San Francisco Bay area); Georgia (1 Atlanta county); Minnesota (2 metro Twin City counties); New York (1 Rochester county); Tennessee (1 Nashville county).Note: 2016 was the first year of MSSA surveillance.HAIC Population: The MRSA surveillance areas represent 15,918,111 persons. The MSSA surveillance areas represent 7,809,686 persons. Source: National Center for Health Statistics bridged-race vintage 2016 postcensal file.HAIC Case Definition: Invasive Staphylococcus aureus (SA) disease: isolation of SA from a normally sterile site in a resident of the surveillance area in 2016. Cases of disease are classified into one of three epidemiologic classifications. A case is classified as hospital-onset (HO) if the SA culture was obtained on or after the fourth calendar day of hospitalization, where admission is hospital day 1; as healthcare-associated community-onset (HACO) if the culture was obtained in an outpatient setting or before the fourth calendar day of hospitalization and had one or more of the following: 1) a history of hospitalization, surgery, dialysis, or residence in a long term care facility in the previous year, or 2) the presence of a central vascular catheter (CVC) within 2 days prior to MRSA culture; and as community-associated (CA) if none of the previously mentioned criteria are met. Cases were classified as MRSA or MSSA based on results from local clinical microbiology laboratory testing.File: MRSA.aug18static_2016Last Updated: Dec 18, 20182016-MRSA-Report-P.pdf2018632