Methicillin-resistant Staphylococcus aureus

% Resistant in 2024

38.2% Resistant

Number of Resistant Isolates of the Total Number of Isolates Tested In 2024

3,659 Resistant

/ 9,579 Tested

% Resistant by Patient Age in 2024

Pediatric:: 25.1% Resistant
Adult:: 39.3% Resistant

Pathogen Profile

Methicillin-resistant Staphylococcus aureus

Staphylococcus aureus causes a range of illnesses, from skin and wound infections to pneumonia and bloodstream infections that can cause sepsis and death. Less severe infections are common and occur outside acute healthcare settings and in the community. Methicillin-resistant Staphylococcus aureus (MRSA) is S. aureus that is resistant to the drug methicillin and other drugs of its class and is found primarily in healthcare settings, although since 2000 it has spread to the community where it has become common.

Data Source: National Healthcare Safety Network (NHSN)
Current Threat Report: Threat LevelSerious
Estimated Cases323,700
Estimated Deaths10,600
Healthcare Costs (USD)$1.7 B
Source: COVID-19: U.S. Impact on Antimicrobial Resistance, Special Report 2024
Years Included: 2011 - 2024

Resources: About Antimicrobial Resistance
Pathogen Index
Phenotype Definitions
Methodology
Frequently Asked Questions
Data Dictionary
Guide to NHSN HAI Pathogen and AR Data

Geographic Locations

Antimicrobial resistance varies by location, driven by a number of factors, including antibiotic use and infection control practices in individual healthcare facilities, the underlying health and age of the patient population, and regional spread from nearby locations.

Percent Methicillin resistance Among Staphylococcus aureus by State Map

HAI Type

Year

This map shows the variation in % methicillin resistance among Staphylococcus aureus causing all event types in 2024.

Percent Methicillin resistance Among Staphylococcus aureus by State

Percent Methicillin resistance Among by State
Location	value
Alabama	52.5
Alaska	Insufficient Data
Arizona	28.3
Arkansas	55.3
California	38.1
Colorado	23
Connecticut	32.8
Delaware	36
District of Columbia	33.3
Florida	48.7
Georgia	43.7
Hawaii	28.6
Idaho	25
Illinois	39
Indiana	37.9
Iowa	39.3
Kansas	36.6
Kentucky	45.2
Louisiana	50.4
Maine	24.5
Maryland	37.5
Massachusetts	37.3
Michigan	29.5
Minnesota	23.4
Mississippi	58.2
Missouri	34
Montana	30.9
Nebraska	35
Nevada	38.6
New Hampshire	25
New Jersey	37.5
New Mexico	40.7
New York	35.9
North Carolina	41.4
North Dakota	14.3
Ohio	48.8
Oklahoma	34.3
Oregon	28.6
Pennsylvania	35.9
Puerto Rico	47.4
Rhode Island	40.5
South Carolina	35.2
South Dakota	32.7
Tennessee	49
Texas	43.1
Utah	32.6
Vermont	39.1
Virginia	48.3
Washington	31.2
West Virginia	64.4
Wisconsin	27
Wyoming	Insufficient Data

Percent Methicillin resistance Among Staphylococcus aureus by State List

HAI Type

Year

Geography

Geography
state	value
United States	38.2%
Alabama	52.5%
Alaska	No Data
Arizona	28.3%
Arkansas	55.3%
California	38.1%
Colorado	23.0%
Connecticut	32.8%
Delaware	36.0%
District of Columbia	33.3%

Changes Over Time in Methicillin resistance Among Staphylococcus aureus

HAI Type

This graph displays percent antimicrobial resistance from 2011 to 2024 for all event types. Blank areas of the chart represent 0% resistance, indicating that zero resistant pathogens were reported for the selected year, phenotype, and HAI type. “Insufficient data” indicates that less than 20 pathogens were isolated and tested for resistance.

Changes Over Time in Methicillin resistance Among Staphylococcus aureus
Year	% Resistant
2011	46.6
2012	46.9
2013	46.9
2014	45.1
2015	45.8
2016	44.4
2017	42.8
2018	42.2
2019	40.6
2020	40.6
2021	40
2022	38.1
2023	38.1
2024	38.2

Healthcare Facility Type

The setting or type of healthcare facility can influence the types of procedures and prevention measures that are related to healthcare-associated infections and antimicrobial resistance.

Methicillin resistance Among Staphylococcus aureus by Hospital Type

View By

Year

This graph displays percent antimicrobial resistance by hospital type in 2024.

Percent resistant Among Staphylococcus aureus by Hospital Type

Percent resistant Among Staphylococcus aureus by Hospital Type
Hospital Type	% Resistant
General Acute Care Hospitals	37.7
Long Term Acute Care Hospitals	70.1
Inpatient Rehabilitation Facilities	68

Footnotes

HAIs include Catheter-associated Urinary Tract Infections (CAUTI), Central Line-associated Bloodstream Infections (CLABSI), and Surgical Site Infections (SSI).
CI (Confidence Interval) - The national, regional, and state-level data included in Antimicrobial Resistance information are displayed with 95% confidence intervals around the percent resistance, which were calculated using a mid-P exact test and are an indication of precision.
Map legends are classified using the Jenks Natural Breaks method.