Lyme Disease and Climate


Research will be performed by Dr. Laurence S. Kalkstein, Dr. Gregory Gurri Glass, Associate Professor Molecular Microbiology & Immunology, Johns Hopkins University, and Meghan E. Dey, undergraduate research assistant

A two year, joint project between Johns Hopkins University and the University of Delaware has begun as of November 1997 researching climate's effects on the spread of infectious and/or vector-borne diseases. The focus of the first year will be on Lyme disease in the area around the Susquehanna River Basin, Maryland, Virginia, and the Chesapeake Bay. Dr. Gregory Gurri Glass gave us a paper by Mount et al. entitled, Simulation of Blacklegged Tick (Acari: Ixodidae) Population Dynamics and Transmission of Borrelia burgdorferi. He also supplied us with a computer program that called, LYMESIM, that utilizes the model in the paper to predict the abundance of adult ticks as well as the expected rate of Lyme disease cases. Research has already been done to try and predict the abundance of adult ticks (which correlates to the spread of Lyme disease). A model has already been created to predict the abundance of adult ticks that is based on the many physical conditions affecting the ticks and the spread of the disease. Climate was a minor consideration in the creation of this model. The model appears to be a good approach to predicting the abundance of adult ticks. The goal for the Center of Climatic Research is to show conclusively that a relationship between climate and the abundance of adult ticks will support or drive the existing model and then possibly adjust the model to account for climatic conditions. The Center for Climatic Research has the following duties to perform: