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Peter Krause, MD

Senior Research Scientist in Epidemiology (Microbial Diseases), in Medicine (Infectious Diseases) and in Pediatrics (Infectious Disease) and Lecturer in Epidemiology (Microbial Diseases)



Dr. Peter J. Krause is Senior Research Scientist in the Department of Epidemiology and Public Health, Yale School of Public Health and Yale School of Medicine, New Haven, CT. He received his B.A. with honors in biology from Williams College and his M.D. from Tufts University School of Medicine. He completed his Pediatric internship and residency at Yale-New Haven Hospital and Stanford University Medical Center and his Pediatric Infectious Diseases training at the University of California Los Angeles (UCLA). He joined the faculty at the University of Connecticut in 1979 where he became Professor of Pediatrics and Chief of the Division of Pediatric Infectious Diseases. He moved back to Yale in 2008.

Dr. Krause carries out translational, epidemiological, and clinical research in the study of vector-borne disease. His primary focus has been on human babesiosis but he has also carried out research on two companion tick-borne infections, Lyme disease and relapsing fever caused by Borrelia miyamotoi. He is the author of more than 195 peer reviewed scientific publications, 2 books, and 35 book chapters. He has served on the Editorial Boards of the Journal of Clinical Microbiology and is on the Editorial Boards of Clinical Infectious Diseases, Clinical Microbiology Reviews, Plos Neglected Tropical Diseases, and Pathogens. He has served on several leadership committees of the Infectious Diseases Society of America (IDSA) and Connecticut Infectious Diseases Society. He recently served as Chair of

the Clinical Practice Guidelines for the Infectious Diseases Society of America's 2020 Guideline on Diagnosis and Management of Babesiosis and as Member, Infectious Diseases Society of America Clinical Practice Guidelines for the Prevention, Diagnosis, and Treatment of Lyme Disease. He has been cited in American Men and Women of Science, The Best Doctors in America, and Who’s Who in America.

Dr. Krause and his colleagues were the first to

Characterize the frequency and clinical outcome of human tick-borne disease coinfection

Identify the long-term persistence of Babesia infection in people

Perform an antibiotic treatment trial for human babesiosis

Characterize persistent and relapsing babesiosis in immunocompromised hosts

Develop a laboratory method for screening the blood supply for Babesia microti infection

Discover human infection by the relapsing fever spirochete Borrelia miyamotoi

Discover human infection by Borrelia miyamotoi in the United States (co-discoverers)

Develop a Borrelia miyamotoi antibody assay

Describe the epidemiology of Borrelia miyamotoi infection

Provide evidence that Borrelia miyamotoi may be transmitted through blood transfusion

They also have quantitated the risk of transmission of babesiosis and Lyme disease though blood transfusion and developed several antibody and molecular-based tests for the diagnosis of babesiosis and Borrelia miyamotoi.

Education & Training

  • Research Fellow
    UCLA (1979)
  • Resident
    Stanford University Medical Center (1974)
  • Resident
    Yale New Haven Hospital (1973)
  • Intern
    Yale New Haven Hospital (1972)
  • MD
    Tufts University School of Medicine (1971)
  • BA
    Williams College (1967)


  • Tick-borne Disease Research
    Obihiro, Japan; Moscow, Russia; New Haven, United States 2010
    We have collaborated with Russian scientists to describe the first human cases of Borrelia miyamotoi relapsing fever infection. We are continuing research collaboration to better define the epidemiology, ecology, clinical manifestations, pathogenesis, diagnosis and treatment of this infection. We are working with Japanese scientists to develop improved laboratory testing for the diagnosis of babesiosis, another emerging tick-borne infection.

Honors & Recognition

Fellow, American Society of Tropical Medicine and Hygiene2016
Member, Infectious Diseases Society of America Practice Guidelines for the Treatment of Lyme Disease, Human Granulocytic Anaplasmosis, and Babesiosis2006
Member, Infectious Disease Society of America Practice Guidelines Committee,1994, 1998

Departments & Organizations