Pseudomonas aeruginosa: Morphology, Biochemical reaction, Pathogenesis

Pseudomonads are a large group of aerobic, Gram-negative, non-fermentative bacilli. This contains over 200 species that were originally contained within the genus Pseudomonas. Some of them produce water soluble pigments which get diffused through the culture medium. The members are generally saprophytic in nature. They are widely distributed in different habitat like in soil, water, … Read more

Pathogenesis of Haemophilus influenzae

The non-capsulated variety of Haemophilus influnzae is a very common commensal in upper respiratory tract. 60-80% cases have been found related to non-capsulated strains in the different surveys conducted in urban communities. This was carried in the throat or naso-pharynx of young children and the rates of 3 to 4% was of capsulated type notably … Read more