CDC NNDSS weekly surveillance

HantAlert

U.S. NNDSS hantavirus reporting for the latest 52 weeks, combining pulmonary syndrome and non-pulmonary syndrome reports from the national Total row.

Latest data availableAug 8, 202602026 W31; -1 vs prior week

Breaking hantavirus news

Event-driven updates from the last week

Source
U.S. surveillance boundary

This dashboard only uses U.S. CDC NNDSS weekly tables. Counts are provisional, assigned by MMWR reporting week, and can lag active local or state investigations. The latest available national data is through Aug 8, 2026. Weekly additions are derived from changes in CDC's cumulative YTD fields because rare-disease rows may update YTD even when the Current week field is blank.

U.S. YTD, latest week138 HPS, 5 non-HPS
Latest 52-week total36
Peak week5Oct 2025
Weeks shown52

Cumulative U.S. reports

Running cumulative total across the latest 52 weeks, derived from CDC NNDSS YTD changes.

JSON
010203040Aug 2025Oct 2025Dec 2025Jan 2026Mar 2026May 2026Jul 2026Aug 2026Aug 2025 (2025 W33): 3 cumulative cases (3 HPS, 0 non-HPS); 3 new this weekAug 2025 (2025 W34): 3 cumulative cases (3 HPS, 0 non-HPS); 0 new this weekAug 2025 (2025 W35): 7 cumulative cases (7 HPS, 0 non-HPS); 4 new this weekSep 2025 (2025 W36): 7 cumulative cases (7 HPS, 0 non-HPS); 0 new this weekSep 2025 (2025 W37): 9 cumulative cases (8 HPS, 1 non-HPS); 2 new this weekSep 2025 (2025 W38): 9 cumulative cases (8 HPS, 1 non-HPS); 0 new this weekSep 2025 (2025 W39): 10 cumulative cases (9 HPS, 1 non-HPS); 1 new this weekOct 2025 (2025 W40): 10 cumulative cases (9 HPS, 1 non-HPS); 0 new this weekOct 2025 (2025 W41): 10 cumulative cases (9 HPS, 1 non-HPS); 0 new this weekOct 2025 (2025 W42): 15 cumulative cases (13 HPS, 2 non-HPS); 5 new this weekOct 2025 (2025 W43): 15 cumulative cases (13 HPS, 2 non-HPS); 0 new this weekNov 2025 (2025 W44): 15 cumulative cases (13 HPS, 2 non-HPS); 0 new this weekNov 2025 (2025 W45): 15 cumulative cases (13 HPS, 2 non-HPS); 0 new this weekNov 2025 (2025 W46): 18 cumulative cases (16 HPS, 2 non-HPS); 3 new this weekNov 2025 (2025 W47): 19 cumulative cases (17 HPS, 2 non-HPS); 1 new this weekNov 2025 (2025 W48): 19 cumulative cases (17 HPS, 2 non-HPS); 0 new this weekDec 2025 (2025 W49): 21 cumulative cases (18 HPS, 3 non-HPS); 2 new this weekDec 2025 (2025 W50): 21 cumulative cases (18 HPS, 3 non-HPS); 0 new this weekDec 2025 (2025 W51): 21 cumulative cases (18 HPS, 3 non-HPS); 0 new this weekDec 2025 (2025 W52): 21 cumulative cases (18 HPS, 3 non-HPS); 0 new this weekJan 2026 (2025 W53): 21 cumulative cases (18 HPS, 3 non-HPS); 0 new this weekJan 2026 (2026 W01): 21 cumulative cases (18 HPS, 3 non-HPS); 0 new this weekJan 2026 (2026 W02): 21 cumulative cases (18 HPS, 3 non-HPS); 0 new this weekJan 2026 (2026 W03): 21 cumulative cases (18 HPS, 3 non-HPS); 0 new this weekJan 2026 (2026 W04): 21 cumulative cases (18 HPS, 3 non-HPS); 0 new this weekFeb 2026 (2026 W05): 21 cumulative cases (18 HPS, 3 non-HPS); 0 new this weekFeb 2026 (2026 W06): 21 cumulative cases (18 HPS, 3 non-HPS); 0 new this weekFeb 2026 (2026 W07): 21 cumulative cases (18 HPS, 3 non-HPS); 0 new this weekFeb 2026 (2026 W08): 21 cumulative cases (18 HPS, 3 non-HPS); 0 new this weekMar 2026 (2026 W09): 22 cumulative cases (19 HPS, 3 non-HPS); 1 new this weekMar 2026 (2026 W10): 23 cumulative cases (20 HPS, 3 non-HPS); 1 new this weekMar 2026 (2026 W11): 24 cumulative cases (20 HPS, 4 non-HPS); 1 new this weekMar 2026 (2026 W12): 24 cumulative cases (20 HPS, 4 non-HPS); 0 new this weekApr 2026 (2026 W13): 24 cumulative cases (20 HPS, 4 non-HPS); 0 new this weekApr 2026 (2026 W14): 24 cumulative cases (20 HPS, 4 non-HPS); 0 new this weekApr 2026 (2026 W15): 24 cumulative cases (20 HPS, 4 non-HPS); 0 new this weekApr 2026 (2026 W16): 24 cumulative cases (20 HPS, 4 non-HPS); 0 new this weekMay 2026 (2026 W17): 24 cumulative cases (20 HPS, 4 non-HPS); 0 new this weekMay 2026 (2026 W18): 25 cumulative cases (21 HPS, 4 non-HPS); 1 new this weekMay 2026 (2026 W19): 26 cumulative cases (21 HPS, 5 non-HPS); 1 new this weekMay 2026 (2026 W20): 26 cumulative cases (21 HPS, 5 non-HPS); 0 new this weekMay 2026 (2026 W21): 26 cumulative cases (21 HPS, 5 non-HPS); 0 new this weekJun 2026 (2026 W22): 26 cumulative cases (21 HPS, 5 non-HPS); 0 new this weekJun 2026 (2026 W23): 31 cumulative cases (25 HPS, 6 non-HPS); 5 new this weekJun 2026 (2026 W24): 32 cumulative cases (25 HPS, 7 non-HPS); 1 new this weekJun 2026 (2026 W25): 32 cumulative cases (25 HPS, 7 non-HPS); 0 new this weekJul 2026 (2026 W26): 32 cumulative cases (25 HPS, 7 non-HPS); 0 new this weekJul 2026 (2026 W27): 33 cumulative cases (26 HPS, 7 non-HPS); 1 new this weekJul 2026 (2026 W28): 35 cumulative cases (27 HPS, 8 non-HPS); 2 new this weekJul 2026 (2026 W29): 35 cumulative cases (27 HPS, 8 non-HPS); 0 new this weekAug 2026 (2026 W30): 36 cumulative cases (27 HPS, 9 non-HPS); 1 new this weekAug 2026 (2026 W31): 36 cumulative cases (27 HPS, 9 non-HPS); 0 new this week
HPSNon-HPS

State heatmap

Latest 52-week cumulative CDC NNDSS cases by state reporting area.

Latest 52 weeks through 2026 W31State rows may not sum exactly to the national Total row after CDC revisions.
U.S. states heatmapped by latest 52-week cumulative CDC NNDSS hantavirus infections
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