Human respiratory tract infections caused by gram- negative diplococci continue to remain significant issues in health care.

Named after Victor Morax, a Swiss ophthalmologist, Moraxella is a genus of Gram-negative bacteria that belongs to the family Moraxellaceae. While some of the species are characterized by a rod-like …

Jun 17, 2025 · Moraxella catarrhalis is a gram-negative diplococcus that commonly colonizes the upper respiratory tract. It is a leading cause of otitis media in children, acute exacerbations of chronic …

The presence of gram-negative intracellular diplococci (GNID) or purple intracellular diplococci (MB or GV) on urethral smear is indicative of presumed gonococcal infection, which is frequently …

N. meningitidis (Meningococci) is a gram-negative, nonsporeforming diplococcus. It is a leading cause of fatal bacterial meningitis. Meningitis may be accompanied by the appearance of petechiae (rash) …

Feb 24, 2022 · Medically relevant gram-negative cocci bacteria are Neisseria gonorrhoeae (causative agent of sexually transmitted disease), Neisseria menin

Apr 17, 2025 · Gram-negative diplococci are most commonly associated with Neisseria gonorrhoeae and Neisseria meningitidis, which are the most clinically significant organisms in this category.

These gram-negative diplococci resemble Neisseria species but can be readily distinguished by routine biochemical tests after culture isolation from infected fluids or tissues. Nearly all strains now produce …

Jan 1, 2025 · Neisseria meningitidis and Moraxella catarrhalis are both gram-negative diplococci. Both bacteria can cause pneumonia but can be differentiated by culture. Colonies of N. meningitidis are …

They are gram-negative rods, but may resemble coccobacilli or diplococci. They are part of the normal oral flora and occasionally cause infections of bone, joints, and tendons.