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 11), Reporting Period: 12/30/18 - 3/16/19 Hamilton County 2018 YTD* Hamilton County 2019 YTD* Percent Change State of TN 2019 YTD* 
Botulism, infant 0 0 0% 0
Campylobacteriosis 5 5 0% 133
Chikungunya Virus 0 0 0% 0
Chlamydia 403 551 37% 7,584
Cryptosporidiosis 1 0 -100% 23
Dengue Fever 0 0 0% 0
Ehrlichiosis/Anaplasmosis 0 0 0% 0
Enterobacteriaciae, Carbapenem-resistant (CRE) 2 1 -50% 114
Gonorrhea 204 261 28% 2,930
Group A Streptococcus, invasive 5 4 -20% 77
Group B Streptococcus, invasive 6 4 -33% 107
Haemophilus influenzae, invasive 1 4 300% 54
Hansen disease (Leprosy) 0 0 0% 0
Hemolytic uremic syndrome 0 0 0% 1
Hepatitis A, acute 0 42 Undefined 326
Hepatitis B, acute 0 2 Undefined 57
Hepatitis C Virus Infection, chronic, or resolved 187 182 -3% 3,543
Hepatitis C, acute 0 1 Undefined 34
HIV 1 3 200% 121
Latent Tuberculosis Infection 10 7 -30% 192
Legionellosis 2 0 -100% 17
Listeriosis 0 0 0% 1
Lyme disease 0 0 0% 2
Malaria 0 0 0% 2
Mumps 0 0 0% 6
Neisseria meningitidis, invasive 0 0 0% 2
Pertussis 1 0 -100% 27
Salmonellosis 2 0 -100% 81
STEC (Shiga toxin-producing Escherichia coli)  0 0 0% 27
Shigellosis 0 3 Undefined 23
Spotted Fever Rickettsiosis 0 0 0% 4
Syphilis 14 19 36% 207
Streptococcus pneumoniae, invasive disease (IPD) 8 6 -25% 211
Tuberculosis 0 2 Undefined 22
VRE (Vancomycin-Resistant Enterococcus), invasive 1 4 300% 37
Vibriosis 0 0 0% 6
West Nile Virus, neuroinvasive disease 0 0 0% 0
West Nile Virus, non-neuroinvasive disease 0 0 0% 0
Yersiniosis 0 0 0% 0
Zika 0 0 0% 0
*Preliminary data subject to change - source: TN Dept of Health