Mammomonogamus is a genus of parasitic nematode of the family Syngamidae that parasitises the respiratory tracts of cattle, sheep, goats, deer, cats, orangutans, and elephants. The nematode can also infect humans and cause the disease called mammomonogamiasis. Several known species fall under the Mammomonogamus genus, but the most common species found to infest humans is Mammomonogamus laryngeus. Infection in humans is very rare, with only about 100 reported cases worldwide, and assumed to be largely accidental. Cases have been reported from the Caribbean, China, Korea, Thailand, and Philippines. The worm usually inhabits the upper-respiratory region in the trachea, bronchus, or larynx, and can elicit chronic coughing and asthma-like symptoms. One interesting case from Thailand reported fi