An IT systems outage disrupted telecommunications and computer services at three integrated health and social services centres (CISSS) in Laval, Quebec [1].

The failure highlighted the vulnerability of critical healthcare infrastructure to physical damage, as the loss of digital systems can hinder patient care and administrative operations in emergency environments.

The disruption began on Monday [1]. It affected health facilities in Laval and other regions north of Montreal, including the Laurentians and Lanaudière [2, 3]. The outage was caused by a severed fibre-optic line [2, 4].

Services were restored by Tuesday morning [2]. While some reports indicate that IT systems at the three affected centres have been fully reestablished [1], other sources said officials were still determining the exact status of the outage in the Laurentians and Lanaudière regions [2].

The affected facilities include the CISSS de Laval and other health centres in the region [2, 3]. The recovery process involved restoring the severed line to bring computer and telecommunications services back online for the medical staff and administration [2, 4].

The outage was caused by a severed fibre-optic line.

This incident underscores the risks associated with centralized digital infrastructure in healthcare. When a single physical point of failure—such as a fibre-optic cable—can disrupt multiple regional health centres, it emphasizes the need for redundant communication paths to ensure that emergency services remain operational during technical failures.