A recent study has revealed the potential for Hanta virus strains to be transmitted between humans in previously unconfirmed ways, opening new avenues for understanding the mechanisms of this virus's spread. While Hanta virus is known for its association with rodents, new data indicates that some of its strains, particularly the Andes strain, may also be transmitted through direct human contact, albeit in a limited scope.
Experts have reported that the Andes strain of Hanta virus can be transmitted from person to person through kissing, sharing drinks, or even through coughing and sneezing, according to The Telegraph. Typically, Hanta viruses are transmitted via rodent excretions, such as feces, saliva, or urine, which can become aerosolized and inhaled, or less commonly through bites or scratches, or by consuming contaminated food.
Details of the Incident
The recent outbreak aboard the cruise ship MV Hondius is believed to be linked to the Andes strain; two Dutch passengers are thought to have contracted the virus from rodents while visiting a waste disposal site in South America for birdwatching. Estimates suggest that these two passengers may have transmitted the virus to others aboard the ship, with five confirmed cases reported so far, alongside three additional suspected cases.
The ship, operated by Oceanwide Expeditions, departed from Ushuaia in Argentina on April 1 and is expected to reach the Spanish Canary Islands by the end of the week. It carried approximately 150 passengers and crew members from 28 countries before dozens disembarked at Saint Helena Island on April 24. This included the transfer of a deceased passenger, who died on April 11, as health authorities worldwide strive to track passengers who left the ship to mitigate any potential spread of the infection.
Background & Context
In a scientific context, a laboratory study published in The Lancet, conducted by researchers from Chile, indicated the presence of infectious viral particles in the saliva, urine, and mucus of infected individuals, particularly during the peak of symptom onset. Professor Marcela Ferrés from the Pontifical Catholic University of Chile, who led the research team, explained that previous outbreaks of the virus have been linked to practices such as sharing straws, reinforcing the hypothesis of transmission via saliva. She added, "The virus can exist in saliva and between teeth, and kissing has been associated with transmission among couples."
Despite these indicators, experts emphasized that the risk of human-to-human transmission of the virus remains very low, especially in the absence of direct and close contact with an infected person. In this context, Professor François Balloux, Director of the Institute of Genetics at University College London, stated, "The Andes virus primarily causes systemic infection, meaning it can be found in various body fluids of the infected person."
Impact & Consequences
Balloux added, "The virus can be transmitted through coughing and sneezing, but this typically requires direct contact with a person carrying a high viral load. However, the Andes virus remains much less transmissible compared to common respiratory viruses, such as those causing influenza, COVID-19, or the common cold." Prior to this recent outbreak, the transmission of Hanta viruses among humans was a subject of scientific debate, but new data may lend weight to this possibility, albeit within a limited scope.
Conversely, experts reassured that there are no indications of concern regarding the virus evolving into a global pandemic. Professor Paul Hunter from the University of East Anglia stated, "This virus will not resemble COVID-19. Hanta virus has been around for decades, possibly even longer, and this event is not expected to pose a significant threat to Europe."
Regional Significance
This study is significant in the context of public health, highlighting the need to enhance awareness about emerging viruses and their modes of transmission. As concerns about the spread of infectious diseases grow, Arab countries must strengthen their health systems to address any potential threats. Additionally, this data may prompt improvements in prevention strategies and health education in Arab communities.
In conclusion, prevention and awareness remain fundamental in addressing any health threat, and individuals and relevant parties must take necessary measures to protect public health.