Because the hantavirus scare involves an finish with the final cruise ship passengers set to depart quarantine, what did the world be taught from this sudden outbreak of a beforehand little-known virus?
The deaths of three individuals who had been onboard the MV Hondius sparked a world well being alert in early Might, prompting fears that the ship’s many worldwide passengers might unfold the rodent-borne illness internationally.
Many countries responded by placing the passengers and phone circumstances in quarantine or isolation for the illness’s six-week incubation interval.
There have been no additional deaths in the course of the outbreak — and all 12 confirmed hantavirus circumstances have been passengers on the ship.
With the final remaining passengers quickly to depart quarantine, AFP solutions key questions on an episode that once more highlighted the danger viruses in animals pose to people.
Is it over?
Nearly all of the passengers of the Dutch-flagged ship quarantined within the Netherlands have been allowed to return residence, the World Well being Group (WHO) stated on Thursday.
In France, 4 individuals quarantined in a hospital are set to be launched on Sunday. A fifth passenger who turned critically in poor health will keep in intensive care; nonetheless, her situation has improved, in keeping with French well being authorities.
In different nations, individuals are additionally set to depart quarantine — in Australia, six passengers are scheduled to be let loose on Tuesday.
There have been no new circumstances reported within the outbreak for greater than three weeks.
Given the incubation interval for the virus has handed, “the episode can probably be thought-about over,” Nicole Tischler, president of the Worldwide Society of Hantaviruses, advised AFP.
What did we learn?
The 12 confirmed cases — and another considered likely — pale in comparison to the tens of thousands of hantavirus infections recorded worldwide every year.
However, most of those cases involve humans getting infected while in close contact with a rodent.
The concerning factor about the cruise ship outbreak was that the virus was transmitted between humans.
This raised the specter that the nearly 150 people on the ship could spread the disease in their home countries.
This did not happen. The only instances of human-to-human transmission were in the tight confines of the ship — and even then appear to have been limited.
“The conditions were really an accelerator for virus particles,” French infectious disease specialist Xavier Lescure told a press briefing on Thursday.
This was evidence that the risk of transmitting hantavirus between humans remains “low,” he added.
The cases also did not show any “particular novelty” compared to the infections regularly recorded in parts of the Americas, Lescure said.
What remains unknown?
The sudden global spotlight on hantavirus has, however, spurred some progress in understanding the virus, for which there is no treatment.
“The event highlighted how little is known about the precise timing of infectiousness; specifically, whether transmission occurs only after symptom onset or may begin in the days beforehand,” Tischler said.
She hoped more would be revealed about how the infected people came in contact on the ship.
Perhaps the most important piece of the puzzle still missing is how the first person became infected.
It had been thought that a passenger on the ship caught the virus while traveling in regions of Argentina where it is endemic.
However, the country’s health ministry announced last week that an investigation in a second Argentine province had failed to find any virus-carrying rodents.
The right response?
Other nations, such as the UK, allowed passengers to isolate at home.
Some of those placed in mandatory quarantine have spoken out.
In the United States, passenger Angela Perryman told CNN This week she felt like a “hostage” after Health Secretary Robert F. Kennedy overruled an expert’s recommendation to release her.
Experts have observed that this episode has again illustrated the risks of zoonotic diseases, which are transmitted from animals to humans.
Some other examples include Covid and mpox, as well as mosquito-borne scourges such as malaria, chikungunya and dengue.
