614 
Participants 
Frits 0rskov 
The International Escherichia and 
Klebsiella Centre of the 
World Health Organization 
Statens Seruminstitut 
Copenhagen, Denmark 
Nathaniel F. Pierce 
Baltimore City Hospitals and 
Johns Hopkins University 
School of Medicine 
Baltimore, Maryland 
* Members of the organizing committee 
John T. Potts, Jr. 
Massachusetts General Hospital and 
Harvard University Medical 
School 
Boston, Massachusetts 
Wallace P. Rowe* 
National Institute of Allergy and 
Infectious Diseases 
National Institutes of Health 
Bethesda, Maryland 
R. Bradley Sack 
Baltimore City Hospitals and 
Johns Hopkins University 
School of Medicine 
Baltimore, Maryland 
for the Workshop. 
H. Williams Smith 
Houghton Poultry Research Station 
Houghton, Huntingdon, England 
Grace Thorne 
Tufts-New England Medical Center 
Hospital and Tufts University School 
of Medicine 
Boston, Massachusetts 
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