Medical virology first appeared in 1970 and was immediately hailed as a classic the fourth edition has been completely updated substantially rewritten and considerably expanded acknowledging that todays students possess a more sophisticated background of molecular and cellular biology the book is pitched a little higher than was the third edition. This fourth edition of medical virology has been completely updated substantially rewritten and considerably expanded throughout the focus is on fundamental principles mechanisms and basic facts hundreds of instructive diagrams well chosen photographs and succinct tables smooth the path for the reader and extensive lists of authoritative reviews at the ends of the chapters simplify . Medical virology first appeared in 1970 and was immediately hailed as a classic the fourth edition has been completely updated substantially rewritten and considerably expanded acknowledging that todays students possess a more sophisticated background of molecular and cellular biology the book is pitched a little higher than was the third edition. Medical virology first appeared in 1970 and was immediately hailed as a classic the fourth edition has been completely updated substantially rewritten and considerably expanded acknowledging that todays students possess a more sophisticated background of molecular and cellular biology the book is pitched a little higher than was the third edition. The aims of this fourth edition of the clinical virology manual remain the same as the those for the fi rst edition thus the original preface is included to describe those goals updated from the third edition this new edition includes 34 chapters and 2 appendices the listing of laboratories offering viral services has been deleted from the original section on reference laboratories in the