The National Geographic Sea Bird, a cruise vessel operated by Lindblad Expeditions, has reported its fourth outbreak of gastrointestinal illness since May 2023. The most recent incident was documented during a voyage from July 15 to July 20 when the Centres for Disease Control and Prevention (CDC) confirmed 13 cases among passengers and crew members.
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In their report dated July 23, the CDC highlighted that eight out of 57 passengers fell ill, along with five crew members, with symptoms including diarrhoea, vomiting, and abdominal cramps. The recurrence of illness has left passengers anxious, particularly given the vessel’s history of multiple outbreaks within a short time frame.


The first instance of gastrointestinal illness on the Sea Bird occurred on May 28, followed by a second outbreak on June 28. Both of these incidents were determined to involve norovirus, a highly contagious virus known for its ability to spread rapidly through contaminated food or water, as well as close contact with infected individuals.
Following the latest outbreak, the CDC is investigating the situation, although the exact cause of the illness infection remains unclear. Meanwhile, reporters have noted that the ship is currently en route to Ketchikan, Alaska, as it continues its operations amid growing concerns over health and safety standards.
In response to the recent illness, the crew of the National Geographic Sea Bird has heightened cleaning and disinfection measures on board. Those who exhibited symptoms have been isolated to prevent further spread of the illness among passengers and staff. Lindblad Expeditions has also collaborated with the Vessel Sanitation Programme (VSP) to ensure that cleaning procedures meet robust health standards, whilst temporarily halting passenger operations to minimise risk.
As a precautionary measure, Lindblad Expeditions announced the cancellation of three upcoming voyages originally scheduled to commence on July 20, July 25, and July 30. The company explained that this decision was made to execute enhanced sanitation protocols consistent with industry regulations and to afford additional time to prevent further cases of illness.
In light of the cancellations, the cruise line stated it is actively engaging with impacted guests to offer refunds, support, and alternative travel arrangements. This proactive approach aims to reassure customers that their health and safety remain the top priority amid ongoing challenges on board.
According to health experts, norovirus outbreaks on cruise ships can lead to significant distress for passengers as they often travel in close quarters. The Mayo Clinic notes that norovirus is particularly problematic in situations involving confined populations and can lead to severe symptoms, making rapid response essential in mitigating the spread of illness.
Lindblad Expeditions has not yet made a detailed public comment regarding the circumstances surrounding the outbreaks, but ongoing efforts to address the situation demonstrate an acknowledgement of the seriousness of the matter. The company’s quick actions following the CDC report reflect the inherent challenges in managing health risks within the cruise line industry.
With the National Geographic Sea Bird operating in a region favoured by cruise tourists – Alaska, known for its stunning natural beauty – it remains to be seen how these outbreaks will impact public perception of the cruise experience in the future. The company strives to navigate this ongoing situation while ensuring that passengers feel safe during their travels.
