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 7), Reporting Period: 12/29/19 - 2/15/20 Hamilton County 2019 YTD* Hamilton County 2020 YTD* Percent Change State of TN 2020 YTD*
Botulism, infant 0 0 0% 1
Campylobacteriosis 2 4 100% 50
Chikungunya Virus 0 1 Undefined 1
Chlamydia 310 277 -11% 4,559
Cryptosporidiosis 0 1 Undefined 15
Dengue Fever 0 0 0% 1
Ehrlichiosis/Anaplasmosis 0 0 0% 1
Enterobacteriaciae, Carbapenem-resistant (CRE) 0 2 Undefined 104
Gonorrhea 163 111 -32% 1,892
Group A Streptococcus, invasive 2 2 0% 68
Group B Streptococcus, invasive 2 2 0% 68
Haemophilus influenzae, invasive 3 0 -100% 24
Hansen disease (Leprosy) 0 0 0% 0
Hemolytic uremic syndrome 0 0 0% 1
Hepatitis A, acute 23 2 -91% 71
Hepatitis B, acute 1 0 -100% 35
Hepatitis C Virus Infection, chronic, or resolved 119 95 -20% 1,995
Hepatitis C, acute 1 2 100% 29
HIV 0 0 0% 58
Latent Tuberculosis Infection 4 4 0% 93
Legionellosis 0 0 0% 14
Listeriosis 0 0 0% 0
Lyme disease 0 0 0% 2
Malaria 0 1 Undefined 2
Mumps 0 0 0% 1
Neisseria meningitidis, invasive 0 0 0% 2
Pertussis 0 4 Undefined 17
Salmonellosis 0 5 Undefined 49
STEC (Shiga toxin-producing Escherichia coli) 0 2 Undefined 20
Shigellosis 2 2 0% 18
Spotted Fever Rickettsiosis 0 0 0% 5
Syphilis 9 3 -67% 95
Streptococcus pneumoniae, invasive disease (IPD) 5 12 140% 144
Tuberculosis 0 0 0% 9
VRE (Vancomycin-Resistant Enterococcus), invasive 2 0 -100% 10
Vibriosis 0 0 0% 1
West Nile Virus, neuroinvasive disease 0 0 0% 0
West Nile Virus, non-neuroinvasive disease 0 0 0% 0
Yersiniosis 0 1 Undefined 7
Zika 0 0 0% 0
*Preliminary data subject to change - source: TN Dept of Health