Weekly Disease Report

This page is a weekly report of reportable diseases in Hamilton County, TN. If you have any questions, please call our Epidemiology Department at (423) 209-8190.

A "reportable" disease is one that is required to be reported to the Health Department. Generally, these are diseases that are infectious from person-to-person or from some agent in the environment to people (for example, mosquitoes or ticks). Tracking these diseases provides an early warning system for the population as a whole. An "outbreak" is a cluster of cases of a disease. Monitoring "reportable" diseases allows us to determine when an "outbreak" is occurring.

Influenza (the flu) is not a reportable disease, however, each flu season (October to May) we track flu-like symptoms that are reported to us by local healthcare providers. These reports are on a voluntary basis but give us some idea of the severity of a flu season in our local area. These numbers will not appear on this report, but rather, will appear on a separate influenza report. For more information on influenza and the importance of getting the flu vaccine, visit our Influenza page.

These abbreviations apply to the table below:
MMWR = Morbidity and Mortality Weekly Report
WK = Week (calendar week number begin January 1)
YTD = Year-to-Date
- % change = means fewer than this time last year

Reportable Diseases

Hamilton County Selected Reportable Diseases, Year-to-Date (MMWR 28), Reporting Period: 1/1/17 - 7/15/17 Hamilton County 2016 YTD* Hamilton County 2017 YTD* Percent Change State of TN 2017 YTD*
Botulism, infant 0 0 0% 3
Campylobacteriosis 9 13 44% 419
Chikungunya Virus 0 0 0% 0
Chlamydia 972 983 1% 17,418
Cryptosporidiosis 1 3 200% 70
Dengue Fever 0 0 0% 0
Ehrlichiosis/Anaplasmosis 1 2 100% 48
Enterobacteriaciae, Carbapenem-resistant (CRE) 4 4 0% 376
Gonorrhea 353 447 27% 5,955
Group A Streptococcus, invasive 11 15 36% 212
Group B Streptococcus, invasive 13 27 108% 276
Haemophilus influenzae, invasive 2 3 50% 87
Hemolytic uremic syndrome 0 0 0% 4
Hepatitis A, acute 0 0 0% 1
Hepatitis B Positive Pregnant Female 5 4 -20% 69
Hepatitis B, acute 3 3 0% 192
Hepatitis C Virus Infection, chronic or resolved NA 453 NA 10,398
Hepatitis C, acute 2 1 -50% 118
HIV 23 23 0% 385
Latent Tuberculosis Infection NA 43 NA 388
Legionellosis 2 6 200% 97
Listeriosis 0 0 0% 4
Lyme disease 0 0 0% 19
Malaria 0 0 0% 2
Mumps 0 0 0% 39
Neisseria meningitidis, invasive 1 0 -100% 2
Pertussis 5 0 -100% 97
Salmonellosis 15 15 0% 425
STEC (Shiga toxin-producing Escherichia coli) 1 2 100% 104
Shigellosis 2 1 -50% 139
Spotted Fever Rickettsiosis 8 8 0% 310
Syphilis 26 56 115% 586
Streptococcus pneumoniae, invasive disease (IPD) 26 23 -12% 518
Tuberculosis 6 2 -67% 2
VRE (Vancomycin-Resistant Enterococcus), invasive 1 9 800% 82
Vibriosis 0 0 0% 10
West Nile Virus, neuroinvasive disease 0 0 0% 1
West Nile Virus, non-neuroinvasive disease 0 0 0% 1
Yersiniosis 0 0 0% 0
Zika 0 0 0% 0
*Preliminary data subject to change - source: TN Dept of Health