Public Health

Disease watch — Indiana & U.S.

Reported case counts for the most-watched notifiable diseases — for Indiana and for the whole country — with how each changed from the week before. Pulled straight from the CDC’s public NNDSS surveillance data.

What you’re looking at & what it isn’t

NNDSS is how U.S. states report cases of specific diseases to the CDC each week. These are reported counts for recent weeks — a factual sense of what’s circulating in Indiana and nationally, not a diagnosis tool.

This is not medical advice. For your own health or official Indiana guidance, see in.gov/health and cdc.gov.

📍 Indiana — 2026 week 28

1,402

reported cases (latest week)

1

diseases rising week-over-week

20

weeks of trend history shown

Foodborne & waterborne

Campylobacteriosis +0% 57

Salmonellosis (excluding Salmonella Typhi infection and Salmonella Paratyphi infection) +0% 36

Shiga toxin-producing Escherichia coli (STEC) +0% 16

Giardiasis +0% 12

Cyclosporiasis +11% 10

Cryptosporidiosis +0% 8

Shigellosis +0% 7

Vibriosis (any species of the family Vibrionaceae, other than toxigenic Vibrio cholerae O1 or O139), Probable +0% 4

Listeriosis, Confirmed +0% 2

Vibriosis (any species of the family Vibrionaceae, other than toxigenic Vibrio cholerae O1 or O139), Confirmed +0% 2

Vaccine-preventable

Pertussis +0% 19

Haemophilus influenzae, invasive disease, All ages, all serotypes +0% 10

Varicella disease +0% 9

Meningococcal disease, All serogroups +0% 2

Meningococcal disease, Unknown serogroup +0% 2

Vector-borne (mosquito & tick)

Arboviral diseases, West Nile virus disease +0% 7

Malaria +0% 2

Sexually transmitted infections

Chlamydia trachomatis infection -0% 722

Gonorrhea +0% 202

Syphilis, Primary and secondary +0% 12

Syphilis, Congenital +0% 4

Bloodborne hepatitis

Hepatitis C, chronic, Confirmed +0% 50

Hepatitis B, chronic, Confirmed -5% 18

Hepatitis C, chronic, Probable +0% 12

Hepatitis C, acute, Confirmed +0% 9

Hepatitis B, acute, Confirmed +0% 8

Hepatitis B, chronic, Probable +0% 8

Hepatitis C, acute, Probable +0% 2

Rare, severe & bioterrorism-watch

Tuberculosis -50% 9

Other reportable diseases

Invasive pneumococcal disease, all ages, Confirmed +0% 28

Carbapenemase-Producing Organisms (CPO), Total +0% 21

Candida auris, screening +0% 15

Legionellosis +0% 14

Candida auris, clinical +0% 9

Coccidioidomycosis, Total +0% 6

Coccidioidomycosis, Probable +0% 5

Coccidioidomycosis, Confirmed +0% 3

Streptococcal toxic shock syndrome +0% 3

Invasive pneumococcal disease, age <5 years, Confirmed +0% 2

Mpox +0% 2

🗺️ Midwest region (IL/IN/MI/OH/WI) — 2026 week 28

9,336

reported cases (latest week)

4

diseases rising week-over-week

20

weeks of trend history shown

Foodborne & waterborne

Cyclosporiasis +78% 1,508

Campylobacteriosis +0% 333

Salmonellosis (excluding Salmonella Typhi infection and Salmonella Paratyphi infection) +0% 248

Shiga toxin-producing Escherichia coli (STEC) +0% 84

Cryptosporidiosis +0% 83

Giardiasis +0% 64

Shigellosis +0% 47

Vibriosis (any species of the family Vibrionaceae, other than toxigenic Vibrio cholerae O1 or O139), Probable +0% 10

Listeriosis, Confirmed +0% 8

Vibriosis (any species of the family Vibrionaceae, other than toxigenic Vibrio cholerae O1 or O139), Confirmed +0% 7

Hepatitis A, Confirmed +0% 6

Vaccine-preventable

Pertussis +0% 101

Varicella disease +0% 54

Haemophilus influenzae, invasive disease, All ages, all serotypes +0% 38

Measles, Indigenous +0% 16

Meningococcal disease, All serogroups +0% 6

Vector-borne (mosquito & tick)

Arboviral diseases, West Nile virus disease +0% 59

Arboviral diseases, La Crosse virus disease +0% 12

Malaria +0% 7

Dengue virus infections, Dengue +0% 6

Sexually transmitted infections

Chlamydia trachomatis infection +3% 4,025

Gonorrhea +2% 1,358

Syphilis, Primary and secondary +0% 71

Syphilis, Congenital +0% 9

Bloodborne hepatitis

Hepatitis C, chronic, Confirmed -0% 210

Hepatitis C, chronic, Probable -1% 113

Hepatitis B, chronic, Probable +0% 69

Hepatitis B, chronic, Confirmed -13% 58

Hepatitis C, acute, Confirmed +0% 16

Hepatitis B, acute, Confirmed +0% 11

Rare, severe & bioterrorism-watch

Tuberculosis +0% 100

Other reportable diseases

Carbapenemase-Producing Organisms (CPO), Total +0% 140

Invasive pneumococcal disease, all ages, Confirmed +0% 121

Candida auris, screening +0% 89

Legionellosis +5% 66

Candida auris, clinical +0% 46

Mpox +0% 26

Coccidioidomycosis, Total +0% 8

Invasive pneumococcal disease, age <5 years, Confirmed +0% 7

Coccidioidomycosis, Probable +0% 6

🇺🇸 United States — 2026 week 28

60,887

reported cases (latest week)

23

diseases rising week-over-week

20

weeks of trend history shown

Foodborne & waterborne

Campylobacteriosis -2% 2,711

Salmonellosis (excluding Salmonella Typhi infection and Salmonella Paratyphi infection) +2% 2,116

Cyclosporiasis +78% 1,974

Shiga toxin-producing Escherichia coli (STEC) -9% 599

Shigellosis +1% 502

Cryptosporidiosis +1% 467

Giardiasis -0% 430

Vibriosis (any species of the family Vibrionaceae, other than toxigenic Vibrio cholerae O1 or O139), Confirmed +0% 82

Vibriosis (any species of the family Vibrionaceae, other than toxigenic Vibrio cholerae O1 or O139), Probable +0% 82

Listeriosis, Confirmed +0% 35

Hepatitis A, Confirmed +0% 32

Vaccine-preventable

Pertussis +4% 720

Measles, Indigenous +0% 254

Haemophilus influenzae, invasive disease, All ages, all serotypes +3% 219

Varicella disease +1% 160

Vector-borne (mosquito & tick)

Arboviral diseases, West Nile virus disease +0% 240

Dengue virus infections, Dengue -1% 150

Arboviral diseases, Chikungunya virus disease +0% 73

Malaria +0% 58

Sexually transmitted infections

Chlamydia trachomatis infection +4% 28,482

Gonorrhea +3% 10,089

Syphilis, Primary and secondary -2% 622

Syphilis, Congenital +4% 76

Bloodborne hepatitis

Hepatitis B, chronic, Confirmed +0% 3,729

Hepatitis C, chronic, Confirmed +9% 1,530

Hepatitis C, chronic, Probable -8% 903

Hepatitis B, chronic, Probable +1% 617

Hepatitis C, acute, Confirmed -3% 103

Hepatitis B, acute, Confirmed +10% 57

Rare, severe & bioterrorism-watch

Tuberculosis -0% 280

Other reportable diseases

Invasive pneumococcal disease, all ages, Confirmed +3% 866

Coccidioidomycosis, Total +10% 534

Coccidioidomycosis, Confirmed +9% 520

Legionellosis +0% 317

Carbapenemase-Producing Organisms (CPO), Total +0% 309

Candida auris, screening +0% 222

Candida auris, clinical +0% 200

Mpox +0% 135

Invasive pneumococcal disease, age <5 years, Confirmed +8% 28

Invasive pneumococcal disease, all ages, Probable +13% 26

🚰 Wastewater signal — by Indiana county — week of 2025-09-07

CDC's wastewater surveillance measures viral genetic material in sewage — a real leading indicator that doesn't depend on anyone getting tested. Shown as each county's current level vs. its own history (not compared across counties), plus the 15-day trend.

Warrick Very high +358% /15d 1 site

Tippecanoe Very high +566% /15d 2 sites

Allen Very high +93% /15d 1 site

Dubois Very high +147% /15d 1 site

Lake Very high +3353% /15d 2 sites

Delaware Very high -23% /15d 1 site

Jasper High +714% /15d 1 site

Monroe High +18% /15d 2 sites

Elkhart High +112% /15d 2 sites

Vanderburgh High +120% /15d 2 sites

Noble High +714% /15d 1 site

Vigo High -33% /15d 1 site

Bartholomew High +100% /15d 1 site

St Joseph High +317% /15d 2 sites

Hamilton Moderate +32% /15d 2 sites

Clark Moderate -6% /15d 2 sites

Marion Moderate -93% /15d 1 site

Wayne Moderate +2284% /15d 1 site

Kosciusko Moderate +260% /15d 1 site

Lawrence Moderate +70% /15d 1 site

Howard Moderate -81% /15d 1 site

Source: CDC NWSS (National Wastewater Surveillance System) — 21 Indiana counties with active monitoring sites.

Source: CDC NNDSS weekly tables (x9gk-5huc) — Indiana (state), Midwest (East North Central region) & U.S. total layers · trend sparklines span up to 20 weeks · page updated Jul 28, 2026, 10:27 AM. Factual surveillance data, not medical advice. Disease groupings (foodborne, vaccine-preventable, vector-borne, etc.) are a general-audience convenience, not a clinical classification.