Neuraminidase is a glycoside hydrolase enzyme that is involved in the spread of the influenza virus. It is used to research potential drugs, such as neuraminidase inhibitors, to treat influenza. Neuraminidase mutations are studied for their implications on influenza drug resistance .

Neuraminidase cleaves the glycosidic linkages of neuraminic acids. Neuraminidase aids in the dispersment of the flu virus in mucosal secretions of the respiratory tract. It also prevents virions from self-aggregation .