Epidemiology Program

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COVID-19 Updates: For the latest updates on the status of Coronavirus (COVID-19) in Harris County, please visit hcphtx.org

Epidemiology Program

Harris County Public Health (HCPH) is actively involved in public health surveillance activities. 

Surveillance is “the ongoing systematic collection, analysis, and interpretation of outcome-specific data for use in the planning, implementation and evaluation of public health practice.”

Several Texas laws (Health & Safety Code, Chapters 81, 84 and 87) require that specific information regarding certain diseases or injuries be provided to the health department (state, regional or local). These diseases and injuries are known as “notifiable conditions.”

Health care providers, hospitals, laboratories, schools, and others are required to report patients who are suspected of having a notifiable condition (Chapter 97, Title 25, Texas Administrative Code). DSHS Notifiable Conditions List

These conditions should be reported to your local health department, which investigates each case and then forwards completed cases to the Texas Department of State Health Services (DSHS) Infectious Disease Control Unit.

Communicable Disease Surveillance & Reporting Contact Information

Phone:  (713) 439-6000
Monday - Friday 8:00 a.m. - 5:00 p.m.

Fax:  (713) 439-6306 (this is a secure fax line)
HIV/AIDS patient information should not be sent via fax.

After Hours Epidemiologist On Call: 
(713) 755-5050

Click here for information on Volunteer/Internship Opportunities.

Epidemiology Resources

Vaccine Preventable Diseases

Epidemiologists play a significant role in the eradication of vaccine preventable diseases. These approaches and successful actions have revolutionized and revitalized public health. The eradication of smallpox marked the first time that humans have knowingly removed a disease from earth. Vaccination strategies and ongoing surveillance were primary tools used to successfully eradicate smallpox. Many of these diseases can be prevented with the vaccines.

Explore Harris County Public Health's Immunization Program and vaccination information

Schools and Daycare Centers

This section contains resources for schools and daycare workers to help prevent the spread of influenza, and other communicable diseases.  We urge you to stay informed, continue to promote good hygiene practices, and encourage students & staff members to stay home if they begin experiencing flu-like symptoms. 

Reporting Forms

Non-Reportable Conditions


Annual Flu Reporting