Bordetella pertussis: Properties, Pathogenesis, Lab Diagnosis
Bordetella pertussis is a small Gram-negative coccobacillus. It is the causative agent of whooping cough (pertussis), an acute respiratory infection most common in children. Two species, B....
Haemophilus influenzae is a pleomorphic, gram-negative coccobacillus that is divided into two groups: unencapsulated (non-typeable) and encapsulated. Encapsulated strains of Haemophilus influenzae...
Acinetobacter is a group of bacteria commonly found in soil, water, and dry environments. Acinetobacter poses very little risk to immune-competent people and the infections are mainly confined...
X factor (hemin) and V factor (nicotinamide-adenine-dinucleotide, NAD) requirement tests are done to identify and differentiate Haemophilus spp. especially identification of Haemophilus...
Gram-Negative Cocci and Coccobacilli of Medical Significance
The most common gram-negative cocci of medical importance belong to the family Neisseriaceae which includes the genera Neisseria, Moraxella, Kingella, Acinetobacter, etc. Gram Negative Cocci...
Brucellosis is one of the world’s most widespread zoonoses which is highly infective for humans. Human brucellosis usually presents as an acute febrile illness, but the disease may persist as...
