virology

Amid an unprecedented international security and coordination operation, the MV Hondius has arrived at the port of Granadilla, in Tenerife, where epidemiologists and members of the Foreign Health Service will examine the passengers and crew, who have not shown any symptoms of hantavirus so far. Once assessed, they will leave the ship, which is moored in a dock, in small boats to the port, grouped by nationality – they come from 23 different countries. From there, they will board military vehicles to reach Tenerife South Airport, from where they will be repatriated on various flights. The 14 Spaniards and a member of the WHO from Africa are bound for Gómez Ulla Hospital (Madrid) to undergo quarantine. Once the process is complete, the cruise ship will refuel and sail to the Netherlands with part of the crew on board and the body of one of the three fatalities.

The Ministry of Health has announced that Spain will receive the MV Hondius in the Canary Islands “in accordance with international law and the spirit of humanitarianism”. The government is thus responding to a request from the World Health Organisation (WHO) and the European Union for the cruise ship, which is travelling from Argentina and has an outbreak of hantavirus on board, to dock in the Canary Islands, in the port of Granadilla, Tenerife. The European Centre for Disease Prevention and Control has assessed which passengers should be evacuated from the ship to Cape Verde, where it is currently located, and which will continue on to the Canary Islands. Once there, they will be examined and transferred to their home countries in accordance with safety protocols. The cruise ship is expected to arrive in the archipelago in three or four days.

The Ministry of Health has announced on social media that, depending on the epidemiological data gathered from the ship regarding a possible hantavirus outbreak during its stopover in Cape Verde, “a decision will be made as to which port of call is most appropriate”. Various reports suggest that the World Health Organisation (WHO) would have preferred the cruise ship to stop in the Canary Islands. “Until then, the Ministry of Health will not take any decision, as we have made clear to the World Health Organisation,” it stated. Furthermore, the Ministry of Health has indicated that, following a meeting with the WHO, a team of epidemiologists will inspect the vessel this afternoon to assess the condition of those on board, determine whether there are any further cases with symptoms, and identify high-risk and low-risk contacts. “This will aid decisions regarding repatriation procedures and the ship’s route.”

Measles cases in Europe and Central Asia fell in 2025 compared with 2024, according to preliminary data reported by 53 countries in the World Health Organization (WHO) European Region. This decline aligns with the preliminary figures published this week by the European Centre for Disease Prevention and Control (ECDC). According to the WHO, countries in Europe and Central Asia reported 33,998 measles cases in 2025, representing a decrease of nearly 75 % compared with the 127,412 cases recorded in 2024. In Spain, however, the number of cases has increased, as shown by data from the Carlos III Health Institute. A few weeks ago, the WHO announced that Spain had lost its measles-free status.

When a rhinovirus, the most common cause of the common cold, infects the lining of our nasal passages, cells work together to fight it off by activating an arsenal of antiviral defences. An article published in the journal Cell Press Blue demonstrates how they do this and suggests that it is the body's defences, rather than the virus itself, that determine whether we catch a cold or not, as well as the severity of the symptoms. 

The veterinary services of the Catalan Regional Government have notified the Ministry of Agriculture, Fisheries, and Food of the detection of two wild boars positive for African swine fever virus in Bellaterra (Barcelona), where they were found dead on November 26. These cases represent the first detection of the disease in Spain since November 1994, according to the ministry in a press release. African swine fever is considered a Category A disease by the European Union, which means that member states must take measures to control and eradicate it as soon as possible. It is a non-zoonotic disease, meaning that humans are not susceptible to infection either through contact with animals or through the consumption of animal products.

The Pan American Health Organisation has maintained its epidemiological alert for Oropouche fever since it was first issued in February 2024. Although the virus only circulates endemically in the Americas, the importation of cases to Europe following international travel is keeping health agencies and authorities on alert.

Respiratory viruses trigger metastatic breast cancer cells to proliferate in lungs in mouse models of breast cancer, a study in Nature indicates. These findings are supported by human observational data. 

According to the results of a phase 2 trial, an oral norovirus vaccine generated a strong mucosal immune response and even reduced viral shedding in vaccinated volunteers. Signs of the vaccine's efficacy support its potential to address the lack of safe and reliable vaccines against this virus, which is a major cause of gastrointestinal infections worldwide. The results were published today in the journal Science Translational Medicine.

A team of researchers from the USA has analyzed the B lymphocytes of seven healthy people in whom no exposure to H5 influenza viruses, such as the avian flu virus, had been documented. The results show that they present antibodies capable of recognizing this type of virus, which, according to the authors, could represent “a first line of defense” in the event of a pandemic. The results are published in the journal Science Immunology.