Major test of first possible Lyme vaccine in 20 years begins

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August 9th, 2022

Robert Terwilliger, right, of Williamsburg, Pa., who is participating in a Lyme disease vaccine trial at the Altoona Center for Clinical Research, is injected with either the new vaccine or a placebo, by registered nurse Janae Roland, Friday, Aug. 5, 2022, in Duncansville, Pa. Lyme is a growing problem, with cases steadily rising and warming weather helping ticks expand their habitat. (AP Photo/Gary M. Baranec)

Researchers are seeking thousands of volunteers in the U.S. and Europe to test the first potential vaccine against Lyme disease in 20 years — in hopes of better fighting the tick-borne threat.

Lyme is a growing problem, with cases rising and warming weather helping ticks expand their habitat. While a vaccine for dogs has long been available, the only Lyme vaccine for humans was pulled off the U.S. market in 2002 from lack of demand, leaving people to rely on bug spray and tick checks.

Now Pfizer and French biotech Valneva are aiming to avoid previous pitfalls in developing a new vaccine to protect both adults and kids as young as 5 from the most common Lyme strains on two continents.

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