Neglected Parasitic Infections (NPIs) in the United States

kissing bug

April 14 is International Chagas Day. Learn more about this neglected parasitic infection.


Chagas Disease

Chagas disease is caused by the parasite Trypanosoma cruzi...



Cysticercosis is a parasitic tissue infection caused by larval cysts of the tapeworm Taenia solium...



Toxocariasis is the parasitic disease caused by the larvae of two species of Toxocara roundworms...

toxoplasmosis Infographic


Toxoplasmosis is the parasitic disease caused by the Toxoplasma gondii parasite...



Trichomoniasis is a very common sexually transmitted disease (STD) caused by infection with the parasite called Trichomonas vaginalis...


Parasitic infections are typically associated with poor and often marginalized communities in low-income countries. However, these infections are also present in the United States.

The neglected parasitic infections (NPIs) are a group of five parasitic diseases that have been targeted by the CDC as priorities for public health action based on the

• Number of people infected
• Severity of the illnesses
• Ability to prevent and treat them

These infections are considered neglected because relatively little attention has been devoted to their surveillance, prevention, and/or treatment.

Anyone, regardless of race or economic status, can become infected although minorities, immigrants, and people living in poor or disadvantaged communities appear to be most at risk.

CDC is working to protect people from these health threats by

• Increasing awareness among physicians and the public
• Synthesizing the existing data to help better understand these infections
• Improving diagnostic testing
• Advising on treatment, including distributing otherwise unavailable drugs for certain infections (Chagas disease)

Page last reviewed: June 13, 2018