Pictured from left to right: Dr. Damasceno Costa (MSNE), Dr. M. V. Hargett (Visitor, U.S. Public Health Service), Dr. Marshall A. Barber (Consultant to the MSNE), Dr. D. Bruce Wilson (Rockefeller Foundation and Field Director of the MSNE), Dr. Paulo C. A. Antunes (MSNE), an unidentified local resident, Dr. Manuel Ferreira (National Department of Public Health, Brazil and seconded to the MSNE), Dr. Oliveira Castro (medical entomologist and seconded to the MSNE) by the Oswaldo Cruz Institute in Rio de Janeiro.. Dr. Soper (not pictured) was the director of the MSNE but spent most of his time in Rio de Janeiro.
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