This issue on Diagnostic Testing for Enteric Patholgens is led by two experts in the field of clinical pathology: Alexander J. McAdam and Collette Fitzgerald. Topics include Salmonella, Shigella and Yersinia; Escherichia coli; Campylobacter; Clostridium difficile; Use of markers of intestinal inflammation for diagnosis of infectious gastroenteritis; Antibiotic susceptibility testing of bacteria that cause gastroenteritis; Norovirus; Rotavirus; Intestinal Abebae; Intestinal coccidia and cryptosporidium; Intestinal microsporidia; and Multiplex PCR tests for gastroentieritis. An added features of this issues a Q and A on a controversial area in clinical microbiology, related to STI testing. Several participants from different fields each answer the same series of questions; specialists from clinical laboratory medicine, public health and clinical patient care participate. Each question is introduced by the lead Editors.

This issue of Clinics in Laboratory Medicine, entitled Respiratory Viruses in Pediatric and adult Populations, is Guest Edited by Alexander J. McAdam MD, PhD, and includes: Developments in Specimen Collection and Tissue Culture for Respiratory Viruses; Nucleic acid amplification assays for respiratory viruses; Emerging molecular assays for respiratory viruses; Drug Resistance in Influenza Virus; Quantitative assays for adenovirus; RSV vaccine development; Human Metapneumovirus; and Recently discovered coronaviruses.