Adult Ixodes scapularis
on a blade of grass.

Acknowledgment
This pamphlet has been produced by Pfizer Central Research as a public service with the generous assistance of Drs. Louis A. Magnarelli and Kirby C. Stafford, Ill, Department of Entomology, Connecticut Agricultural Experiment Station; Dr. Robert T. Schoen, Department of Rheumatology, Yale School of Medicine; and Dr. Steven A. Levy, Durham Veterinary Hospital.

Also of assistance were Dr. Sandra Bushmich, University of Connecticut; Dr. Willy Burgdorfer, U.S. Public Health Services, Rocky Mountain Laboratories; and Dr. Steven Lugar, Kaiser-Permanente.

Pfizer Central Research
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