The present invention provides influenza neuraminidase (NA)-binding human antibodies, which are capable of neutralizing at least one influenza A virus strain comprising NA of the N1 subtype, and antigen-binding fragments thereof. In certain embodiments, the antibodies or antigen-binding fragments furthermore are capable of neutralizing at least one influenza A virus strain comprising NA of the N2 subtype. The invention furthermore relates to the use of said antibodies or antigen-binding fragments in the diagnosis, prophylaxis and/or treatment of influenza infection.