NATIONAL NOTIFIABLE DISEASES SURVEILLANCE SYSTEM

To protect Americans from serious disease, the National Notifable Diseases Surveillance System (NNDSS) helps monitor, control, and prevent about 120 diseases. These national notifable diseases are important to monitor nationwide and include infectious diseases such as Zika, foodborne outbreaks such as E. coli, and noninfectious conditions such as . About 3,000 public health departments gather and use data on these diseases to protect their local communities. Through NNDSS, CDC receives and uses these data to keep people healthy and defend America from health threats.

Accessible version: https://www.cdc.gov/nndss/about/index.html

NNDSS BY THE NUMBERS

120 diseases under surveillance Nearly 2.7 million disease events 120 • infectious diseases • bioterrorism agents 2.7M reported through NNDSS each year • sexually transmitted diseases • noninfectious conditions

About 3,000 public health departments 100% of the American population 3K send disease data to 60 state, territorial, and 100% protected other public health departments, who then send the data to CDC

WHY WE DO NOTIFIABLE

Detect Disease Stop Disease Study Disease Improve How Keep People When and Before It Spreads to Strengthen We Prevent Healthy Where It Happens the Science and Control Disease

NNDSS National Notifiable Diseases Surveillance System HOW WE DO NOTIFIABLE DISEASE SURVEILLANCE Patient CDC provides INFORMATION: 1 A person feels ill and goes to the doctor. ► Websites ► Fact sheets ► Toolkits ► Brochures and pamphlets Healthcare Team 2 Doctor diagnoses or laboratory tests CDC provides GUIDANCE: confrm a disease that is reportable by ► Clinical guidance state law to the local or state public health ► Research department. Publications REPORTABLE ► • Morbidity and Mortality Doctor or lab sends information about this Weekly Report disease to the local or state public health • Vital Signs department. • Community Guide Public Health Department 3 The public health department receives CDC provides SUPPORT: disease data and uses them to: • identify and control disease outbreaks ► Guidance • ensure that the patient is effectively ► Data collection and reporting treated so disease is not spread NOTIFIABLE ► Alerts • provide testing and preventive care to • Health Alert Network [HAN] those exposed to the disease • Information Exchange • control sources of exposure. [Epi-X] Network ► Large-scale outbreak assistance The state public health department sends ► Small-scale outbreak assistance information about national notifable ► Funding diseases to CDC.

CDC National Notifable Diseases 4 Surveillance System Team NNDSS collects national notifable disease data on behalf of CDC.

The NNDSS team receives, secures, processes, and provides these data to disease-specifc programs across CDC. For more information about notifable disease surveillance, please access the NNDSS website at

CDC Disease Program cdc.gov/nndss/ 5 CDC programs use disease-specifc data to: • support recognition of disease outbreaks • monitor shifts in disease patterns • evaluate and fund disease control activities.