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 48), Reporting Period: 1/1/17 - 12/2/17 Hamilton County 2016 YTD* Hamilton County 2017 YTD* Percent Change State of TN 2017 YTD*
Botulism, infant 0 0 0% 4
Campylobacteriosis 20 37 85% 814
Chikungunya Virus 0 0 0% 0
Chlamydia 1840 1731 -6% 31,169
Cryptosporidiosis 10 10 0% 174
Dengue Fever 0 0 0% 0
Ehrlichiosis/Anaplasmosis 4 5 25% 116
Enterobacteriaciae, Carbapenem-resistant (CRE) 10 7 -30% 656
Gonorrhea 661 849 28% 10,953
Group A Streptococcus, invasive 13 23 77% 346
Group B Streptococcus, invasive 24 37 54% 513
Haemophilus influenzae, invasive 6 4 -33% 141
Hemolytic uremic syndrome 0 0 0% 9
Hepatitis A, acute 1 0 -100% 5
Hepatitis B Positive Pregnant Female 7 9 29% 119
Hepatitis B, acute 4 7 75% 339
Hepatitis C Virus Infection, chronic or resolved NA 962 NA 18,916
Hepatitis C, acute 7 3 -57% 187
HIV 36 34 -6% 603
Latent Tuberculosis Infection NA 80 NA 949
Legionellosis 4 10 150% 190
Listeriosis 0 0 0% 9
Lyme disease 0 0 0% 38
Malaria 1 1 0% 8
Mumps 1 0 -100% 69
Neisseria meningitidis, invasive 1 3 200% 6
Pertussis 8 4 -50% 193
Salmonellosis 35 38 9% 900
STEC (Shiga toxin-producing Escherichia coli) 4 3 -25% 182
Shigellosis 4 14 250% 266
Spotted Fever Rickettsiosis 12 21 75% 742
Syphilis 53 96 81% 1257
Streptococcus pneumoniae, invasive disease (IPD) 38 31 -18% 727
Tuberculosis 10 6 -40% 114
VRE (Vancomycin-Resistant Enterococcus), invasive 2 12 500% 128
Vibriosis 0 2 Undefined 33
West Nile Virus, neuroinvasive disease 0 3 Undefined 20
West Nile Virus, non-neuroinvasive disease 0 1 Undefined 10
Yersiniosis 0 0 0% 18
Zika 4 0 -100% 0
*Preliminary data subject to change - source: TN Dept of Health