South Africa confirms Hanta virus strain capable of human transmission linked to cruise ship

The emergence of the Andes strain of the Hanta virus, a strain known for its rare human-to-human transmission capability, in South Africa presents a concerning public health development. The virus was detected in a passenger evacuated from the cruise ship MV Hondius, which had docked off the coast of Cape Verde. This incident has led to the tragic deaths of three individuals, with one case confirmed in Johannesburg after the patient was transferred via commercial flight from Saint Helena.

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Initial tests show that this is indeed the Andes strain.

South Africa's Minister of Health, Aaron Motsoaledi, confirmed the presence of the Andes strain, emphasizing that while human-to-human transmission is possible, it is exceedingly rare and requires very close contact. The National Institute for Communicable Diseases has identified the Andes strain as the cause of illness in both the Dutch woman who died in Johannesburg and a British national currently receiving treatment there. The World Health Organization has reported two confirmed and five suspected cases, prompting swift action from South African authorities.

Public health officials are now engaged in an extensive contact tracing operation, focusing on the approximately 90 individuals who were on the same flight as the deceased Dutch woman. This includes passengers and crew members. The woman had reportedly developed gastrointestinal symptoms on April 24 while on Saint Helena and her condition worsened during the flight to Johannesburg, where she passed away on April 26. The urgency of identifying and monitoring these contacts is paramount to preventing any further spread of the virus within South Africa and beyond.

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This is also the only strain among the 38 known strains that has the ability to spread from person to person. However, as we have said, this mode of transmission is very rare and only occurs when there is very close contact between people.

From a South African perspective, this situation underscores the importance of robust public health surveillance and rapid response mechanisms, especially in the context of international travel and potential disease importation. While the global media might report this as a medical anomaly linked to a cruise ship, for us, it is a critical reminder of our vulnerability and the need for constant vigilance. The swift confirmation by our health ministry and the immediate initiation of contact tracing demonstrate our commitment to safeguarding public health, even as we grapple with the complexities of a rare and potentially dangerous virus.

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We need to identify who came into contact with this woman.