Strain-specific Lyme Disease Immunity Lasts for Years, Penn Research Finds

A new study led by researchers from the University of Pennsylvania shows that humans appear to develop immunity against specific strains of the Lyme disease that can last six to nine years.



  • Dr. Henry Daniell

    Growing Plants to Save Lives

    Tucked behind old factory buildings on Penn’s South Bank campus stands a gleaming greenhouse. The $2 million structure, completed late last year, is state-of-the-art. Drip irrigation ensures each pot receives just the right amount of water.

  • World Watches Colt Birth on New Bolton Center Foal Cam

    World Watches Colt Birth on New Bolton Center Foal Cam

    With the world watching, mare My Special Girl gave birth to a colt at 9:22 p.m. on Saturday, March 29, at Penn Vet’s New Bolton Center. The grey foal weighed 104 pounds and measured 39.5 inches from crown to tail.

  • Solving Society’s Greatest Energy Challenges

    Solving Society’s Greatest Energy Challenges

    When University sophomore Albert Xiao joined the first class of the Vagelos Integrated Program in Energy Research (VIPER), a dual-degree program in Penn Arts & Sciences and the S…

  • 3D Printing for Veterinary Surgeries

    3D Printing for Veterinary Surgeries

    In PennDesign’s Fabrication Lab, students and faculty use three-dimensional printers to craft geometric forms, architectural models, and other products of the imagination.

  • Improving Lives, Bettering the World

    Improving Lives, Bettering the World

    Penn is an academic powerhouse, with vast potential to create knowledge, connect it across all divides, and use it for the progress of humankind.

  • Penn Researchers Help Unearth Forgotten Egyptian Pharaoh

    Working in the ancient Egyptian city of Abydos over the winter break, a team of Penn archaeologists knew they had found something special. After excavating a series of chambers constructed of mud-brick—usually a sign of a common person’s tomb—they encountered a stone slab, and finally, a burial chamber lined with limestone.

  • Penn Researchers Show How Brain ‘Geotags’ Memory

    Penn Researchers Show How Brain ‘Geotags’ Memory

    The hippocampus in the brain is associated with remembering events and tracking locations. Researchers, however, had been unable to determine whether the same sets of neurons were involved in both of these processes.

  • Penn’s Research Enterprise

    Penn’s Research Enterprise

    Vice Provost for Research Dawn A. Bonnell is responsible for facilitating Penn’s sprawling research enterprise, which consists of 12 schools, more than 165 multidisciplinary centers and institutes, and a fully incorporated health system.

  • Cultivating Knowledge

    Cultivating Knowledge

    A stone’s throw from bustling 38th Street, just off Hamilton Walk, lies a carefully curated green oasis, and nearby, a soaring glass-walled structure where plants from the exotic to the mundane are cared for and studied.

  • Video Game Helps Identify Brain Cell

    Video Game Helps Identify Brain Cell

    A research team led by Penn psychology professor Michael Kahana used a video game to help identify a new brain cell involved in navigation. Participants in the study rode a virtual bike to find hidden objects while implanted electrodes monitored their brain activity.

Penn in the news

DNA Study Shows Why Neanderthals, Modern Humans Are So Different April 18, 2014 | Reuters

Sarah Tishkoff of the Perelman School of Medicine and the School of Arts and Sciences is quoted about a study on what fundamentally distinguishes present-day humans from Neanderthals.

Audio: Researchers Replace Guidelines With Fables, to Test Doctors’ Memories April 17, 2014 | “Newsworks,” WHYY Radio (Philadelphia)

Zachary Meisel of the Perelman School of Medicine and Austin Kilaru, a recent graduate of the school, are highlighted for researching “narrative medicine.”

Penn Study: Patients More Satisfied With Treatment When Part of Decisions April 16, 2014 | “Newsworks,” WHYY Radio (Philadelphia)

Neha Vapiwala of the Perelman School of Medicine is featured for researching the impact of shared decision-making.

Video: Is Coffee Becoming an Addition for Some? April 16, 2014 | CBS News (Pittsburgh)

Charles O’Brien of the Perelman School of Medicine comments on physicians studying “caffeine use disorder.”

Visualizing Philadelphia’s Public Health Nurses at Work: A Century of Photos April 16, 2014 | Philadelphia Inquirer

Jean Whelan of the School of Nursing writes about public health nurses in Philadelphia.

From the Penn Current