Why did WHO declare the MV Hondius hantavirus outbreak over?

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WHO Declares End to MV Hondius Hantavirus Outbreak

The World Health Organisation (WHO) declared an end to the hantavirus outbreak on the cruise ship MV Hondius because the final individual who had been in contact with an infected person completed their quarantine period, tested negative for the virus, and returned home. This development, coupled with no new cases being reported since May 25, signifies that the outbreak is no longer considered a public health risk.
Final Quarantine Completion Marks End of Outbreak

The conclusion of the hantavirus outbreak was formally announced after the last known contact of an exposed individual on the MV Hondius successfully finished their quarantine. This individual subsequently tested negative for the virus, confirming the cessation of active transmission related to this specific incident. The WHO's chief, Tedros Adhanom Ghebreyesus, stated that with no further cases emerging since May 25, the organisation no longer views the situation as a public health threat.
Twelve Confirmed and One Probable Case Identified

The hantavirus outbreak linked to the MV Hondius involved a total of 12 confirmed cases and one probable case. Tragically, three of these cases resulted in fatalities. The Dutch-flagged ship had embarked on a journey from Ushuaia, Argentina, on April 1, visiting remote islands in the South Atlantic before proceeding to Tenerife, Spain, where passengers were evacuated. The vessel eventually docked in Rotterdam, Netherlands, on May 18.
Global Contact Tracing and Future Research Underway

Health authorities in 33 countries and territories followed up with over 650 identified contacts associated with the outbreak. The WHO intends to continue its work to gain a deeper understanding of the outbreak's dynamics and the hantavirus itself. This includes coordinating a multi-country study involving 21 nations to investigate disease development, which is expected to aid in creating diagnostics, therapeutics, and vaccines for potential future outbreaks.
Ongoing Vigilance for Hantavirus Threats

While the specific outbreak on the MV Hondius is over, experts caution that Andes virus and other hantaviruses remain a public health concern, particularly in South America and other endemic regions. Diana Rojas Alvarez, the WHO's high-impact epidemics chief, emphasised the ongoing need for monitoring these viruses, preparing for potential spread, and engaging local communities in preparedness and prevention efforts, underscoring that work on hantaviruses must persist over time.

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Why did WHO declare the MV Hondius hantavirus outbreak over?

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