Of the several species of Haemophilus that are known, Haemophilus influenzae is the most prevalent pathogen. Several distinct capsular serotypes have been defined, but type b H influenzae is responsible for most clinical disease. H influenzae is a respiratory pathogen that colonizes the oropharynx and causes bronchitis, pneumonia, or disseminated infection when local or systemic host defense factors are compromised. (more…)
Streptococcus pneumoniae strains, commonly called pneumococci, differ from other streptococci in that they contain complex po ...
Serodiagnosis of bacterial diseases is of value only in specific circumstances. IgG antibody is long-lived, and its presence, a ...
Immunization is needed for person to be prevented of getting diseases, whereas in bigger scale, it is needed to eradicate the bre ...
The immune system consists of proteins, cells and organs that are concerned with defense of the individual, primarily against t ...
Exotoxins are noxious proteins secreted by many bacteria. These toxins are often heat-labile and thus can be heat-inactivated f ...