Epidemiology is the branch of public health which deals with the study of the distribution and determinants of diseases in a population and the prevention and control of such diseases.

Brazos County Health District (BCHD) epidemiologists are responsible for:

  • Receiving and documentation of reportable diseases and conditions.
  • Surveillance and monitoring of reportable diseases and conditions.
  • Investigation of disease outbreaks.
  • Recommendation and implementation of prevention and control measures for notifiable diseases.
  • Collection and maintenance of data on notifiable conditions in the county.
  • Information of the public on diseases and conditions of public health interest in the county.
  • Reporting of notifiable conditions and outbreaks to regional, state and national agencies.
  • Collaboration with regional, state and national agencies on public health programs and interventions in Brazos County.

DISEASE REPORTING

Epidemiology Relies Heavily on Disease Reporting

To accomplish our mission of “Preventing disease, protecting life and promoting a healthy lifestyle”, the BCHD relies heavily on reports of notifiable conditions. Notifiable conditions are a select group of diseases and conditions which are required by law to be reported to the health district and other agencies by healthcare providers, laboratories and other healthcare partners. Public health relies on prompt reporting which is vital for the purposes of data collection, disease surveillance prevention and control, outbreak investigations, public health preparedness and emergency response as well as public health policy formulation.

The Brazos County Health District counts on all healthcare providers and partners in the county to report any confirmed, probable or suspected notifiable condition, outbreak, or unusual expression of illness to it.

For questions, further information or to report a notifiable condition please contact the Brazos County Health District at: 979-361-4440; and  Fax Forms to: 979-823-2275

DATA OVER TIME

Reported Cases of Diseases

Brazos County Reported Cases 2023-2024: The line graph shows how the number of reported cases changed in 2023 and 2024. It clearly highlights an increase in cases over time for some conditions while slightly variable for others, making it easy to spot key differences between the two years
The line graph shows how the number of reported cases changed in 2023 and 2024. It clearly highlights an increase in cases over time for some conditions while slightly variable for others, making it easy to spot key differences between the two years.
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Brazos County Reported Cases 2023-2024: The bar chart compares the number of reportable cases in 2023 and 2024, highlighting changes over the two years in Brazos County. Overall, the data shows an increase in reported cases from 2023 to 2024 for salmonella, campylobacter, CRE & pertussis. Other conditions show a slight difference between the two reporting years.
The bar chart compares the number of reportable cases in 2023 and 2024, highlighting changes over the two years in Brazos County. Overall, the data shows an increase in reported cases from 2023 to 2024 for salmonella, campylobacter, CRE & pertussis. Other conditions show a slight difference between the two reporting years.

 

Brazos County Monthly Influenza Cases from 2020 -2024: The line graph shows the number of influenza cases reported each year from 2020 to 2024. It clearly illustrates how case numbers have risen/varied over time, helping to understand overall trends in flu activity. In the past five seasons Influenza cases were lowest during the 2020-2021 season (when respiratory preventive measures were observed strictly).
Brazos County Monthly Influenza Cases from 2020 -2024: The line graph shows the number of influenza cases reported each year from 2020 to 2024. It clearly illustrates how case numbers have risen/varied over time, helping to understand overall trends in flu activity. In the past five seasons Influenza cases were lowest during the 2020-2021 season (when respiratory preventive measures were observed strictly).

 

Brazos County Monthly Influenza Report: The line graph shows the number of influenza cases reported each month from October 2024 to April 2025. It clearly highlights how flu activity changed throughout the season.
Brazos County Monthly Influenza Report: The line graph shows the number of influenza cases reported each month from October 2024 to April 2025. It clearly highlights how flu activity changed throughout the season.

 

FACT SHEETS