Count Antimicrobial Days and Days Present From Rows (NHSN)
Counts NHSN antimicrobial days and days present from rows.
Open the tool → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Administrations, one per line
- A, Vancomycin, IV, 2025-12-01 07:00, MICU A, Vancomycin, IV, 2025-12-01 15:00, Medical Ward A, Vancomycin, IV, 2025-12-01 23:00, Medical Ward
- Stays, one per line
- A, MICU, 2025-11-30, 2025-12-01 A, Medical Ward, 2025-12-01, 2025-12-03
Result: 1 antimicrobial day and 4 days present, facility-wide inpatient, across 2 months.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Administrations, one per line: patient, agent, route, date (YYYY-MM-DD), location
- Stays, one per line: patient, location, date in, date out (YYYY-MM-DD)
- Locations to leave out of the facility-wide counts, separated by commas
How this is calculated
Citation
CDC NHSN Antimicrobial Use and Resistance (AUR) Module protocol, July 2026: antimicrobial days (Tables 1 to 3), days present, and Appendix C worked examples. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.