A hidden cause of rare childhood stroke has been identified

Australian researchers have identified a possible link between past infections and an increased risk of stroke in children.

As reported by BAKU.WS with reference to Monash University, specialists concluded that a past infection can nearly double the likelihood of stroke in childhood. The results of the scientific work were published in the journal Neurology.

As part of the study, scientists analyzed data from the Vaccine Safety Health Link — a medical information database of residents of the Australian state of Victoria, which records information on vaccinations, infectious diseases, and hospitalizations. Over seven years, specialists registered 571 cases of stroke among children. Although this condition is rare — approximately one case per 18,000 — the consequences can be extremely serious, including permanent disability and even death.

The analysis showed that stroke was more frequently diagnosed in boys, particularly in infants under one year of age. Children who had suffered an infection within the previous 60 days had approximately twice the likelihood of developing a stroke. Moreover, the elevated risk persisted not only in the first weeks after the illness but also over the course of several subsequent months.

The most pronounced association was observed after severe infections such as meningitis, encephalitis, sepsis, and lower respiratory tract diseases. However, scientists note that the risk also increased after more common illnesses — for example, gastrointestinal infections, influenza, and respiratory syncytial virus.

At the same time, the study did not find a statistically significant link between recent vaccination and the occurrence of stroke in children.

According to the lead author of the study, Lachlan Dalli, the findings serve as a reminder that stroke is not exclusively a disease of the elderly. Specialists recommend that parents and doctors closely monitor a child's condition even some time after recovery. Possible warning signs include breathing difficulties, seizures, refusal to eat, and lack of response to external stimuli.