A. Voller

C.M. Abraham

It was not too long ago that many physicians and biomedical scientists felt that the era of 'vaccines' for protecting mankind against infectious disease was coming to an end. During the 1 940s and 50s the widespread use of newly developed antibiotics and antimicrobial chemotherapeutic agents suggested a new era in medicine, i. e. the control and eventual elimination of all infectious diseases, at least those caused by bacteria, by' chemical means. The magic 'bullet' proposed by Paul Ehrlich in the early 1900s seemed to be the method of choice for controling infection. However, it is now quite evident that those high expectations were unwarranted. Although many acute infections, especially those caused by pyogenic cocci, have been controlled by antibiotics, it is quite evident that infectious diseases, even those caused by bacteria, still are a major problem. Thus, the old 'standby' of preventative vaccination is making a strong comeback, not only for viral but also for bacterial infections. However, except for a relatively small number of viral diseases and those bacterial diseases due to toxin elaborated by microorganisms rather than invasion and replication of the microbe per se, preventative vaccination still has not fulfilled the expectations of their proponents. There has been a recent resurgence of interest concerning all aspects of vaccines, not only their preparation and administration, but also the nature and mechanism of the host immune response to the constituent micro organisms and their products.

New Trends and Developments in Vaccines

A. Bartlett

D. Bidwell

Analyses for naturally occurring biological substances or administered materials have been with us for many years. These were usually based on the physical or chemical characteristics of the substances to be measured. However in recent years there has been an explosion of interest in analytical methods which made use of the high specificity and sensitivity of im munological reactions. These methods can be very simple in terms of technical procedures and can usually be performed on minute samples of biological fluids - factors which have ensured their ready acceptance in most laboratories. Recently there have been numerous meetings on technical aspects of particular immunoassays and on their application in specific diseases. We felt however that the time was ripe for an 'overview' of the whole field. To this end a conference on 'Immunoassays for the 80s' was held at the Zoological Society of London in 1980, and this book is largely based on that meeting. Both the immunoassay techniques and their numerous applications were discussed and are dealt with at length in this volume. The editors wish to thank all the contributors for their chapters and to acknowledge the debt they owe to Jean Ryan (NLCM) without whose organization and assistance this volume would not have been completed. A.V., D.B., A.B.

A. Voller

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