Mycoplasmas are serious causative agents of diseases of both humans and animals, such as acute respiratory inflammation (including pneumonia), urogenital tract infections and AIDS [ 52, 53].
The focus here will be on L. pneumophila, the causative agent of serious, life-threatening pneumonia ("Legionnaires' disease"), often requiring hospitalization [ Centers for Disease Control and Prevention CDCC) 2011b; Yoder et al. 2008].
Aspergillus niger is a causative agent causing IA.
In spite of the vast number of publications on the bacterium, many questions about its pathogenicity are still unanswered, and this pathogen remains a major causative agent of serious human diseases such as pneumonia, meningitis and bacteraemia [ 1].
S. suis serotype 2 (SS2) is considered the most pathogenic as well as the most prevalent capsular type among thirty-three serotypes (types 1 to 31, 33, and 1/2) in diseased pigs, and it is also the causative agent of serious infections in humans, especially in people in close contact with pig or pork byproducts [ 1- 3].
Streptococcus pneumoniae is an opportunistic colonizer of the nasopharynx and the causative agent of many serious diseases such as pneumonia, sepsis, meningitis and otitis media.
The Gram-negative bacterium Burkholderia pseudomallei is a serious environmental pathogen of man and the causative agent of the often fatal disease melioidosis.
The bacterium Burkholderia pseudomallei is a Gram-negative, facultative intracellular bacillus and the causative agent of melioidosis, a serious emerging disease responsible for significant morbidity and mortality in Southeast Asia and Northern Australia [1].
This book is a much-needed comprehensive overview of recent research on the causative agent of tularemia, a potentially serious illness that occurs naturally in the United States.
Trypanosoma cruzi is the causative agent of Chagas' disease a serious ailment that affects millions of people in Latin America, against which there is no prevention, vaccine or effective chemotherapeutic agent [ 1]. T. cruzi has a complex life cycle characterized by several developmental forms present in vertebrate and invertebrate hosts.
