Australia must apply lessons learned from the Covid-19 pandemic to stay ahead of a potential Nipah virus outbreak, warns one of the country’s leading infectious disease experts. Professor Allen Cheng has emphasized the need for strategic planning, vigilant monitoring of potential incoming cases, and readiness to act should the disease reach Australian shores.
As of early February, the World Health Organization (WHO) assesses the risk of international spread as low. So far, no cases outside India have been reported following two confirmed cases in West Bengal late last month. Nonetheless, several Asian countries have already tightened airport health screenings as a precaution, and Australian health officials are closely monitoring the situation.
Professor Cheng, who serves as a Professor of Infectious Diseases at Monash University, highlighted the importance of preparedness. “We need to plan and prepare so that we know what is happening, monitor for cases that might arrive in Australia, and know what to do if a case is detected,” he told Yahoo News Australia. He stressed the need for vigilance, particularly among travelers to regions where the virus is present.
Understanding the Nipah Virus
The Nipah virus, although different from Covid-19, shares some concerning characteristics. Professor Cheng described it as a “terrible disease,” noting its high mortality rate. “Roughly half of those who develop severe infection die from it,” he explained. Symptoms can vary widely, and the virus can cause pneumonia and encephalitis, the latter being a severe inflammation of the brain associated with significant mortality.
Currently, no vaccines are available to treat Nipah virus infections. “There was an early-stage study of a treatment published in Australia in 2020, but it is still a long way before later stage studies to test whether it works,” Professor Cheng noted. This lack of treatment options underscores the importance of preventive measures and rapid response capabilities.
Transmission and Risks
The Nipah virus can be transmitted in three primary ways: direct contact with infected animals, particularly bats and pigs; consumption of contaminated food, such as date palm sap; and human-to-human transmission. “In South Asia, contaminated food is thought to be a major way it is transmitted,” Professor Cheng said.
While fruit bats carrying the Nipah virus are present in Australia, infected bats have not been detected. However, a closely related virus, the Hendra virus, is present in bats and has led to infections in horses and humans in Australia. Although Nipah virus isn’t formally tracked in Australia, medical professionals remain alert to potential infections in returning travelers.
Lessons from Covid-19
The call for preparedness comes in the wake of the Covid-19 pandemic, which highlighted the global vulnerability to emerging infectious diseases. Australia’s response to Covid-19 involved significant public health measures and rapid adaptation, lessons that can be applied to potential Nipah virus threats.
Professor Cheng advocates for systems that can respond swiftly to any suspected cases. “Any suspected cases would be managed with public health units, and with only a few specialized laboratories able to diagnose it, authorities would be notified of positive tests quickly,” he stated. Although the virus isn’t routinely reported nationwide, existing systems are designed to respond rapidly if a case emerges.
Preventive Measures and Public Awareness
To mitigate risks, Professor Cheng advises avoiding foods implicated in transmission, such as date palm sap drinks, and ensuring that fruits and vegetables are thoroughly washed, peeled, or cooked. He also recommends avoiding contact with bats and wild animals.
Despite the potential threat, Professor Cheng suggests that travelers should be more concerned about common infections like malaria, typhoid, and dengue. “I’d suggest travelers see their GP before they go,” he advised, emphasizing the importance of comprehensive travel health advice.
Looking Ahead
As Australia remains vigilant, the situation underscores the need for continuous monitoring and readiness to implement public health measures if necessary. The global nature of infectious diseases necessitates a proactive approach, leveraging lessons from past experiences to protect public health.
For now, Australians are urged to stay informed and heed travel advisories while health authorities continue to monitor developments closely.
