The first bacterial genome, Haemophilus influenzae, was completely sequenced, annotated, and published in 1995. Today, more than 200 prokaryotic (archaeal and bacterial) genomes have been completed and over 500 prokaryotic genomes are in va- ous stages of completion. Seventeen eukaryotic genomes plus four eukaryotic chro- somes have been completed. The concept of achieving better understanding of an organism through knowledge of the complete genomic sequence was first demonstrated in 1978 when the first bacteriophage genome, X174, was sequenced. Complete genomic sequences of prokaryotes have led to a better understanding of the biology and evolution of the microbes, and, for pathogens, facilitated identification of new vaccine candidates, putative virulence genes, targets for antibiotics, new strategy for rapid diagnosis, and investigation of bacteria-host interactions and disease mec- nisms. Recent increased interest in microbial pathogens and infectious diseases is largely attributed to the re-emergence of infectious diseases like tuberculosis, emergence of new infectious diseases like AIDS and severe acute respiratory syndrome, the problem of an increasing rate of emergence of antibiotic-resistant variants of pathogens, and the fear of bioterrorism. Microbes are highly diverse and abundant in the biosphere. Less than 1% of these morphologically identified microbes can be cultured in vitro using standard techniques and conditions. With such abundance of microbes in nature, we can expect to see new variants and new species evolve and a small number will emerge as pathogens to humans.

The emergence of H5N1 avian influenza in 1997 and of the influenza A H1N1 of swine origin in 2009 calls for new, rapid and sustainable solutions for both seasonal and pandemic influenza viruses. During the last ten years, science and technology have made enormous progress, and we are now able to monitor in real time the genetics of viruses while they spread globally, to make more powerful vaccines using novel adjuvants, and to generate viruses in the laboratory using reverse genetics. This volume not only provides state-of-the-art information on the biology of influenza viruses and on influenza vaccines, but is also designed to be a resource to face the present H1N1 pandemic and to plan for long-term global and sustainable solutions.

This volume reviews the current understanding of the taxonomy, disease syndromes, genetics, biology, and pathogenic factors of Histophilus somni, as well as the host immune response to this pathogen. H. somni is one of the most important bacterial pathogens in cattle and other ruminants, and its virulence factors are highly conserved with Haemophilus influenzae and other members of the Pasteurellaceae. H. somni has been recognized as a major cause of thrombotic meningoencephalitis, respiratory disease syndromes, myocarditis, reproductive disease syndromes, polyarthritis, mastitis, ocular disease, and septicemia. The only known habitats of H. somni are the mucosal surfaces of ruminants, making this bacterium an opportunistic pathogen. Although it is capable of causing inflammation at systemic sites and is toxic to epithelial and phagocytic cells, the bacterium's wide array of virulence factors act primarily as a defense against, or to escape recognition from, host innate and adaptive immunity.

Technological advances, together with a better understanding of the molecular biology of infectious microorganisms, are creating exciting possibilities for a new generation of replicating vaccines. Historically, live vaccines have been either directly derived from a natural source or attenuated by empirical approaches using serial passages and host cell adaptation. Currently, we are witnessing a quantum leap in our technological capabilities to specifically modify the genetic make-up of viruses and bacteria, making it possible to generate improved live vaccines and to develop completely new types of replicating vaccines, such as vectored vaccines, single-round infectious vaccines and replicon vaccines. This book highlights some of the most exciting recent developments towards a new generation of replicating vaccines.

Course covers topics in infectious diseases in children and is intended for Pediatric Infectious disease trainees, trainers, and all those who manage children with infections.

Each of the chapters in this book is based on a lecture given at the sixth "Infection and Immunity in Children" course, held at the end of June 2008 at Keble College, Oxford.

Thus, it is the sixth book in a series that provides succinct and readable updates on just about every aspect of the discipline of Pediatric Infectious Diseases.

A cutting-edge collection of basic and state-of-the-art methods optimized for investigating the molecular biology of this class of retrovirus. These readily reproducible techniques range from methods for the isolation and detection of human retroviruses to cutting-edge methods for exploring the interplay between the viruses and the host. Here, the researcher will find up-to-date techniques for the isolation and propagation of HIV, HTLV, and foamy virus from a variety of sources. There are also assays for determining the cell tropism of HIV-1, the coreceptor usage of HIV-1, and human gene expression with HIV-1 infection by microarrays, as well as for phenotyping HIV-1 infected monocytes and examining their fitness. Highlights include the detection and quantification of HIV-1 in resting CD4+, a new cloning system for making recombinent virus, cDNA microarrays, and the determination of genetic polymorphisms in two recently identified HIV-1 co-factors that are critical for HIV-1 infection.

This volume covers all aspects of infection by pathogenic Leptospira species, the causative agents of the world's most widespread zoonosis. Topics include aspects of human and animal leptospirosis as well as detailed analyses of our current knowledge of leptospiral structure and physiology, epidemiology, pathogenesis, genomics, immunity and vaccines. Updates are presented on leptospiral systematics, identification and diagnostics, as well as practical information on culture of Leptospira. Contact information is also provided for Leptospira reference centers. All chapters were written by experts in the field, providing an invaluable reference source for scientists, veterinarians, clinicians and all others with an interest in leptospirosis.

A decade has passed since Drs. Hoch and Silhavy edited their comprehensive work entitled Two-Component Signal Transduction. This fascinating book encour- aged many microbiologists and students to enter the new worldofsignal transduction in microbiology. In 2003, Dr. Inouye edited Histidine Kinase in Signal Transduc- tion, which focused on histidine kinases and presented the wealth ofinformation accumulated on this protein family. Bacteria usually possess a numberofTwo-Component Systems (TCSs), rang- ing from a few to over 100. InE. coli, 29 histidine kinases, 32 response regulators, and 1histidine-containing phosphor transmitter (HPt) domain have been found by analyses ofthe K-12 genome. Several examples ofin vitro and in vivo cross-talks and signal transductioncascadesbetweenTCSs inE. coli have beenreported,which suggests the existence ofa TCS network (Chapter 1). Interactions among different TCSs enable one system to respond to multiple signals, which is important for bacteria to minutely adjust themselves to complex environmental changes. Such interactions are found or predicted in various bacteria in this book. Many ofthese interactions might be connected by small proteins such as B1500(Chapter 1)and PmrD (Chapter2). More examplesofsuch proteins should be identified in the near future in order to fill-in the missing parts ofthe bacterial signal transduction network, a new paradigm that is increasingly recognized as the signal transduction pathway in bacterial cells. For drug discovery, this pathway is consideredas important as the signal transductionpathway in animal cells (Chapters 15 and 16).

This volume provides a complete and timely guide to the use of adeno-associated virus (AAV) vectors for genetic manipulation of mammalian tissues. Beginning with methods for the design and characterization of AAV vectors, the book continues with protocols for AAV delivery to various components of the central nervous system, to a number of sensory systems, and to a broad range of other tissues. Novel techniques such as ultrasound-targeted delivery to the brain, subpial delivery to the spinal cord, and subILM delivery to the retina are accompanied by chapters that provide an overview and comparison of current methods for AAV delivery to tissues such as brain, heart, liver, and lung. Written for the highly successful Methods in Molecular Biology series, chapters include introductions to their respective topics, lists of the necessary materials and reagents, readily reproducible step-by-step laboratory protocols, and tips for troubleshooting and avoiding known pitfalls. Authoritative and comprehensive, Adeno-Associated Virus Vectors: Design and Delivery aims to enhance the utility of AAV vectors for targeted gene transfer to living animals and continue the ongoing development of novel AAV-based gene therapies for human disease.

This new volume on Cryptosporidium and Cryptosporidiosis discusses all relevant aspects of the biology, molecular biology, host-parasite interaction, epidemiology as well as diagnosis and treatment of these widespread parasites. It represents a useful guide for physicians, microbiologists, veterinarians and water professionals seeking advanced knowledge and guidance about these important parasitic pathogens. A section on practical lab procedures discusses step-by-step guidelines for sample preparation and lab procedures. The new book may further serve as a reference work for graduate students in medical and veterinary microbiology.

Astroviruses were first identified in the feces of children in 1975. Since then, they have been found in 3 to 20% of children with diarrhea. Given that serological studies have demonstrated that up to 90% of children have been exposed to at least one strain of astrovirus by age 9, the prevalence of infection may be much higher. Supporting this are studies demonstrating that astroviruses can also be isolated in a subset of asymptomatic individuals, suggesting that a proportion of infected individuals shed the virus asymptomatically or for some time after the resolution of other symptoms of infection. Asymptomatic carriers may be a major reservoir for astroviruses in the environment and could contribute to dissemination of the virus. Astroviruses are extremely stable in the environment and can be transmitted nosocomially, directly from infected individuals and potentially animals, and through contaminated food and water. Although typically an acute disease, astrovirus infection in premature infants may be associated with the development of necrotizing enterocolitis and in new-onset celiac disease in children. Immunocompromised children are even more susceptible often developing persistent infections that lead to wasting or even systemic infections associated with fatal encephalitis. In spite of its importance, little is known about astrovirus pathogenesis, molecular biology, epidemiology, or cell biology. The goal of this book is to provide the latest and most up-to-date information on this medically important and rapidly evolving group of viruses. It will include sections on the history of astroviruses and their disease in humans; information on viral replication and immune responses; new information on how astroviruses induce disease including the expression of a viral enterotoxin regulating intestinal epithelial cell tight junctions, the isolation and identification of new astrovirus genotypes in mammals including humans, and astroviruses of veterinary importance. Finally, the book will also introduce the complexity of astrovirus epidemiology and potential as an important new zoonotic disease, and its role in food-borne disease. This will be the first book of its kind and will be of great interest to microbiologists, virologists, infectious disease specialists, immunologists, pediatricians, public health and food safety experts, veterinarians, poultry industry specialists, and researchers and clinicians interested in enteritis. "

This two-volume work covers the molecular and cell biology, genetics and evolution of influenza viruses, the pathogenesis of infection, resultant host innate and adaptive immune response, prevention of infection through vaccination and approaches to the therapeutic control of infection.. Experts at the forefront of these areas provide critical assessments with regard to influenza virology, immunology, cell and molecular biology, and pathogenesis. Volume I provides overviews of the latest findings on molecular determinants of viral pathogenicity, virus entry and cell tropism, pandemic risk assessment, transmission and pathogenesis in animal species, viral evolution, ecology and antigenic variation, while Volume II focuses on the role of innate and adaptive immunity in pathogenesis, development of vaccines and antivirals.

Giardia duodenalis (=G. lamblia), Entamoeba histolytica, Cryptosporidium parvum and Cyclospora cayetanensis are more than just a mouthful for most who might encounter them. These protozoan parasitic agents contribute significantly to the staggering caseload of diarrheal disease morbidity encountered in developing world nations. Compounding the issue of their mere presence is the fact that standard ova and parasite exams frequently do not detect these infections. Detectable stages may be shed intermittently or require specialized staining procedures. Added to this is the often large number of asymptomatic carriers who serve as reservoirs for infecting others. These parasites are also not strangers to more developed nations, having responsibility for both small and large-scale disease outbreaks. In such settings they may be even more difficult to detect simply because they are frequently overlooked in the grand scheme of disease causing possibilities. They share common features; all are Protozoa, all possess trophic stages that inhabit the gastrointestinal tract, all have the ability to produce disease and in some instances death, and all produce environmentally stable cysts or oocysts, which ensure their transmissibility. In other ways, these organisms are profoundly different. Giardia is a flagellate that inhabits the gut lumen in close association with enterocytes. Entamoeba is an amoeba that preferentially inhabits the mucosal region of the gut lumen, but which may, under certain circumstances, become invasive. Cryptosporidium and Cyclospora are obligate intracellular coccidians, each taking up a unique niche within their respective host enterocytes.

Since their discovery in the 1960s, methicillin-resistant S. aureus (MRSA) strains continue to present unique challenges to clinicians, microbiologists, and molecular biologists around the world. These organisms are typically resistant to several other antimicrobial agents, including aminoglycosides, chloramphenicol, clindamycin, fluoroquinolones and macrolides and are susceptible only to vancomycin. In fact there is increasing evidence that this susceptibility will soon disappear. In this book, internationally renowned authors comprehensively review all aspects of MRSA research. Topics covered include strategies for the detection and typing of MRSA strains, epidemiological characterisation, molecular evolution of MRSA, vancoymcin resistant S. aureus, mechanisms of methicillin resistance, virulence mechanisms in MRSA pathogenesis, recommended treatment of MRSA infections, and options for the prevention and control of MRSA infections.

Milton Taylor, Indiana University, offers an easy-to-read and fascinating text describing the impact of viruses on human society. The book starts with an analysis of the profound effect that viral epidemics had on world history resulting in demographic upheavals by destroying total populations. It also provides a brief history of virology and immunology. Furthermore, the use of viruses for the treatment of cancer (viral oncolysis or virotherapy) and bacterial diseases (phage therapy) and as vectors in gene therapy is discussed in detail. Several chapters focus on viral diseases such as smallpox, influenza, polio, hepatitis and their control, as well as on HIV and AIDS and on some emerging viruses with an interesting story attached to their discovery or vaccine development. The book closes with a chapter on biological weapons. It will serve as an invaluable source of information for beginners in the field of virology as well as for experienced virologists, other academics, students, and readers without prior knowledge of virology or molecular biology.

This volume describes the mechanisms which bacteria have created to secure their survival, proliferation and dissemination by subverting the actin cytoskeleton of host cells. Bacteria have developed a veritable arsenal of toxins, effector proteins and virulence factors that allow them to modify the properties of the intracellular actin cytoskeleton for their own purposes. Bacterial factors either modify actin directly as the main component of this part of the cytoskeleton or functionally subvert regulatory or signalling proteins terminating at the actin cytoskeleton. In short, this volume provides an overview of the various tricks bacteria have evolved to "act on actin" in order to hijack this essential host cell component for their own needs. As such, it will be of interest to scientists from many fields, as well as clinicians whose work involves infectious diseases.

The currently available means of combating fungal infections are weak and clumsy. The application of fungal genomics offers an unparalleled opportunity to develop novel antifungal drugs. Interestingly, several novel antifungal drug targets have already been identified and validated. However, it is premature to expect a novel antifungal agent in clinical setting as drug discovery programs are still in their infancy. In addition to classical and genomic approaches to drug discovery, treasure trove based on natural products and phytomedicine can provide a multitude of alternative modes of combating fungal infection. This book incisively addresses essential topics on various aspects pertaining to fungal diseases in human and animals, their reservoir, fungal pathogenesis, their management and recent advances in their treatment. Issues of antifungal drug toxicity, especially nephrotoxicity, are also discussed. The development of resistance in fungal pathogens, including multidrug resistance and its mechanism, is dealt with in two chapters. Diverse diagnostic approaches to fungal infections are also reviewed. The combinational drug strategies used in combating invasive fungal infections are addressed in detail. The management of pulmonary mycoses in stem cell transplantation is also given special focus. Novel antifungal drugs (synthetic and herbal), fungal vaccines, and metabolic pathways as drug targets are discussed in detail in three different chapters. Subsequently the roles of innate immunity, cytokine therapy and immunomodulators in the treatment of fungal infections are elaborated upon. As novel drug delivery systems have a great potential for modifying the pharmacokinetics of medications, the last chapter takes this fact into consideration in its examination of state-of-the-art delivery systems in controlling fungal infections.

The aim of Avian Influenza Virus, Second Edition is to provide the essential methods used in working with animal influenza viruses, and to compile more advanced information that will guide the user in designing influenza studies. Influenza A viruses are among the most important pathogens for humans, food animals and companion animals. Research and diagnostics with animal influenza viruses are critical to animal health and it should be recognized that the needs and goals of animal agriculture and veterinary medicine are not always the same as those of public health. This volume sorts out the differences in the structure of the poultry, swine and equine industries, the biological differences of influenza virus from each animal group, and provides host, strain and lineage specific guidance and procedures. Written in the successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible protocols, and notes on troubleshooting and avoiding known pitfalls.Authoritative and accessible, Avian Influenza Virus, Second Edition seeks to serve both professionals and novices with its well-honed methodologies in an effort to further our knowledge of these important pathogens.

The notion that contaminated environments in hospital settings significantly contribute to the risk of an individual acquiring an infection while hospitalized is continuously gaining recognition by the medical community. There is a clear correlation between the environmental bioburden present in a clinical setting and the risk of patients acquiring an infection. Thus using self-disinfecting surfaces can be a very important adjunct in the fight against nosocomial pathogens.

This book reviews the increasing evidence that contaminated non-intrusive soft and hard surfaces located in the clinical surroundings are a source of nosocomial pathogens and focuses on the utility of copper containing materials in reducing bioburden and fighting hospital acquired infections. It also reviews other biocidal surface alternatives and the economics of using biocidal surfaces in a hospital environment. Finally, it discusses the pros and cons of existent disinfection modalities other than biocidal surfaces.

Nanotechnology is a collective term describing a broad range of relatively novel topics. Scale is the main unifying theme, with nanotechnology being concerned with matter on the nanometer scale. A quintessential tenet of nanotechnology is the precise self-assembly of nanometer-sized components into ordered devices. Nanotechnology seeks to mimic what nature has achieved, with precision at the nanometer level down to the atomic level. Nanobiotechnology, a division of nanotechnology, involves the exploitation of biomaterials, devices or methodologies in the nanoscale. In recent years a set of b- molecules has been studied and utilized. Virus particles are natural nanomaterials and have recently received attention for their tremendous potential in this field. The extensive study of viruses as pathogens has yielded detailed knowledge about their biological, genetic, and physical properties. Bacterial viruses (bacte- ophages), plant and animal eukaryotic viruses, and viruses of archaea have all been characterized in this manner. The knowledge of their replicative cycles allows manipulation and tailoring of particles, relying on the principles of self-assembly in infected hosts to build the base materials. The atomic resolution of the virion structure reveals ways in which to tailor particles for higher-order functions and assemblies.

John Walker and Ralph Rapley have collected a wide-ranging group of molecular and biochemical techniques that are the most frequently used in medical and clinical research, especially diagnostics. The authors-well-established investigators who run their own research programs and use the methods on a regular basis-outline the practical procedures for using them and describe a variety of pertinent applications. Among the technologies presented are southern and western blotting, electrophoresis, PCR, cDNA and protein microarrays, liquid chromatography, in situ hybridization, karyotyping, flow cytometry, bioinformatics, genomics, and ribotyping. The applications include assays for mutation detection, mRNA analysis, chromosome translocations, inborn errors of metabolism, protein therapeutics, and gene therapy.

This two-volume work covers the molecular and cell biology, genetics and evolution of influenza viruses, the pathogenesis of infection, resultant host innate and adaptive immune response, prevention of infection through vaccination and approaches to the therapeutic control of infection.. Experts at the forefront of these areas provide critical assessments with regard to influenza virology, immunology, cell and molecular biology, and pathogenesis. Volume I provides overviews of the latest findings on molecular determinants of viral pathogenicity, virus entry and cell tropism, pandemic risk assessment, transmission and pathogenesis in animal species, viral evolution, ecology and antigenic variation, while Volume II focuses on the role of innate and adaptive immunity in pathogenesis, development of vaccines and antivirals.