The recent outbreak of the Andes strain of hantavirus on a luxury cruise ship, the MV Hondius, has stirred up a familiar sense of anxiety and apprehension reminiscent of the early days of the COVID-19 pandemic. The news of a rodent-borne virus with a somewhat frightening name, a ship in quarantine, and reports of illness and deaths, predictably triggered a wave of fear and speculation online. This situation has placed health officials in a precarious position: how to communicate transparently and effectively about a virus that, while serious, is not new and is unlikely to cause a global pandemic, without inadvertently fueling widespread panic. The challenge lies in navigating the fine line between informing the public and avoiding the spread of misinformation that could lead to unnecessary alarm and a repeat of the trust issues experienced during COVID-19.
Learning from the communication missteps of the COVID-19 era, health officials are approaching this hantavirus outbreak with a renewed focus on empathy, clarity, and proactively addressing uncertainties and combating falsehoods. Leaders like Gianfranco Spiteri, emergencies lead at the EU’s European Centre for Disease Prevention and Control, highlight the extensive internal discussions dedicated to communication strategies. During COVID-19, governments often faced criticism for slow reactions, contradictory messaging, and the inconsistent application of restrictions and vaccine rollouts, all of which contributed to a decline in public trust in institutions. A study, for instance, revealed a drop in faith in public health institutions in 20 out of 27 EU countries between 2020 and 2022. This time around, officials are striving to be more open, acknowledging what they know and what they don’t, in an effort to rebuild public confidence and ensure their messages resonate effectively.
The delicate act of balancing the seriousness of a global health event with reassurances about low public risk and honesty regarding unknown aspects of the virus is a constant struggle for health communicators. Spiteri notes the contrasting public opinions, with some accusing them of overreacting and others of not doing enough. He emphasizes that their messages are always grounded in the available evidence. Despite these efforts, social media reflects a public still grappling with the fear of a return to lockdowns and other COVID-era restrictions. Gustavo Palacios, a hantavirus expert, points out that an outbreak can be a significant public health concern requiring action without necessarily escalating into a pandemic. Unfortunately, the online sphere is also rife with misinformation, with some falsely portraying hantavirus as a greater threat than COVID-19 or promoting unproven remedies like ivermectin, vitamin D, and zinc, alongside conspiracy theories linking it to vaccines or pharmaceutical profits. Sander van der Linden, a misinformation expert, advocates for proactive communication that prepares the public to critically evaluate information and recognize potential conspiracy theories, building resilience within the population.
As of Thursday, the current outbreak on the MV Hondius has resulted in three deaths from 11 reported hantavirus cases, all among those onboard. Dozens of other passengers are under monitoring as they return to their home countries. Health officials have stressed that unlike COVID-19, established measures exist to control hantavirus spread. The strain has been circulating in parts of Argentina and Chile for decades, and samples from the ship show no significant genetic variation. Gabby Stern, former head of communications at the World Health Organization, observes noticeable improvements in how public health authorities are handling communication, particularly in their willingness to share information as it becomes available. She believes the public health community has absorbed crucial lessons from the past, though acknowledging that there’s always room for further improvement.
The World Health Organization has taken a proactive stance, quickly reassuring the public through regular press conferences, alerts, and social media Q&A sessions since the outbreak’s disclosure on May 3rd. WHO chief Dr. Tedros Adhanom Ghebreyesus even penned an open letter to the people of Tenerife, where the Hondius docked, explicitly stating, “this is not another Covid” and emphasizing that “the current public health risk from hantavirus remains low.” While some initial responses, like that of the US Centers for Disease Control and Prevention, were slower to start, they have since accelerated their communication efforts. Michael Osterholm, an infectious diseases expert, highlights that this situation reinforces the crucial lesson from COVID-19: the profound importance of effective communication.
The narrative surrounding the hantavirus outbreak on a cruise ship has undoubtedly evoked strong emotional responses, drawing unsettling parallels to the infamous Diamond Princess outbreak at the beginning of the COVID-19 pandemic in 2020. That incident, which saw 14 deaths and nearly a quarter of its passengers and crew infected, left a deep impression. Krutika Kuppalli of the University of Texas Southwestern Medical Center notes that “the whole cruise ship thing… is a very significant memory from the beginning of Covid,” triggering a powerful emotional reaction in many. This resemblance was particularly palpable for individuals like Laura Millán in Tenerife, who observed passengers disembarking under strict infection control measures. Seeing WHO chief Tedros arrive on the island to oversee the hantavirus response brought back memories and, for some, initially heightened anxieties, even as they recognized the crucial role these efforts played in ensuring appropriate public health measures were in place.