Flu Immunization Available While Supplies Last The best way to protect yourself against the flu is to get vaccinated. Coronavirus Disease 2019 (COVID-19) Information and resources about the coronavirus such as protection against, travel advisories and how THD is monitoring. Begin Your Career with THD THD is looking for motivated people interested in the rewards of working toward the greater good of their community. Here’s to Protecting Your Kid’s Future Vaccines Help Keep Your Kids Safe Against Dangerous Diseases Testing & Immunizations THD provides low and/or no-cost, confidential testing services and can recommend treatment resources if necessary. Restaurant Inspections Our professional staff conducts routine inspections at all restaurants in our community. Food Classes & Permits All local food service employees must have an original, valid Food Handler Permit from THD in their possession while at work. Our Locations We have many campuses across Tulsa to help you and your family with your health department needs.