Powassan Virus in Children
Powassan virus infection in children is rare but can lead to severe neurologic illness, including encephalitis and long-term complications.
For an overview, see Powassan virus.
Powassan Virus in Pediatric Patients
Children can develop serious neurologic symptoms following infection with Powassan virus, including encephalitis and meningitis.
Symptoms may include fever, headache, vomiting, weakness, confusion, or seizures. In severe cases, children may require hospitalization and intensive care.
Neurologic Complications
Powassan virus infection can affect the central nervous system, leading to inflammation of the brain (encephalitis). Some children may experience long-term neurologic complications, including cognitive difficulties, motor impairment, or seizures.
These neurologic patterns can overlap with other tick-borne infections such as neurologic Lyme disease, though Powassan virus is typically more acute and severe in presentation.
Diagnosis
Diagnosis of Powassan virus infection may require specialized testing, including antibody detection or PCR testing in cerebrospinal fluid.
Because early testing may be limited, clinicians often rely on clinical patterns and exposure history. For more on diagnostic challenges, see Lyme testing limitations.
Treatment
There is currently no specific antiviral treatment for Powassan virus. Management is supportive and may include hospitalization, monitoring, and treatment of complications.
Clinical Perspective
Powassan virus in children is uncommon but can be severe. Early recognition is important, especially in children presenting with neurologic symptoms following possible tick exposure.
Because ticks can transmit multiple infections, clinicians should also consider coinfections when evaluating complex or severe presentations.
Dr. Daniel Cameron, MD, MPH
Lyme disease clinician with over 30 years of experience and past president of ILADS.
Symptoms • Testing • Coinfections • Recovery • Pediatric • Prevention
I would like to see follow up for families to better understand what outcomes can occur for children.
My grandson is the first case discussed in this article. He is now 6 years old and there is no guidance for possible complications, though there are some that were not discovered until recently.
Thanks for reminding us of the need for further research.
Thanks for sharing. I have not seen information on possible complications. I am concerned that any subsequent symptoms may be related to a treatable tick borne illness.