INTERNACIONAL
Detectaron el primer caso de virus autóctono del virus Usutu en España: qué es y cómo se contagia

El hallazgo del primer caso autóctono de infección por el virus Usutu de mosquito en España encendió las alarmas en el sistema sanitario. Este virus, detectado en un donante de sangre de Mallorca mediante los análisis rutinarios en el verano de 2024, confirma que el agente circula localmente.
El caso fue validado por el Laboratorio Nacional de Referencia en Arbovirus del Instituto de Salud Carlos III mediante pruebas moleculares y análisis de neutralización, después de que el test inicial arrojara resultado positivo para el Virus del Nilo Occidental.
El virus Usutu es un arbovirus perteneciente a la familia Flaviviridae. Se identificó en África en 1959 y lleva el nombre del río Usutu, ubicado cerca del lugar de su descubrimiento. Originalmente afecta a gran variedad de especies de aves, que actúan como reservorio natural. En las décadas recientes, el virus Usutu se ha expandido sostenidamente por diversos países europeos, donde se le vincula con brotes en aves silvestres y ocasionalmente con infecciones humanas.

El virus Usutu se asemeja estructuralmente al virus del Nilo Occidental, presenta una similitud genética del 76 al 78 por ciento, y ambos se detectan con técnicas cruzadas en bancos de sangre.
La transmisión principal del virus Usutu a humanos ocurre por la picadura de mosquitos del género Culex. El ciclo habitual involucra a aves infectadas: un mosquito se alimenta de un ave portadora del virus y después pica a una persona, así transmite el virus de forma incidental. De acuerdo con la doctora Teresa Jiménez, directora médica del Banco de Sangre y Tejidos de Baleares, quien explicó a EFE, los humanos no son el principal objetivo de este virus, pero “es posible que se produzcan infecciones, sobre todo en zonas donde circulan aves migratorias y hay elevada actividad de mosquitos”.
Otra vía de contagio identificada en este caso español es la transfusión sanguínea. Si una persona infectada pero asintomática dona sangre, el virus puede ser transferido al receptor, algo destacado en un artículo publicado en la revista científica Transfusion.

No existe evidencia científica de transmisión directa entre humanos, ni de contagio por contacto físico, saliva o secreciones respiratorias.
La infección por virus Usutu en humanos suele transcurrir de manera desapercibida: la mayoría de los casos son asintomáticos o presentan molestias leves. Entre los síntomas que pueden aparecer se incluyen:
- Fiebre elevada
- Dolores de cabeza
- Malestar general
- Alteraciones neurológicas en algunos casos, como meningoencefalitis
En población inmunodeprimida o en personas con enfermedades previas, el virus puede desencadenar complicaciones de gravedad, sobre todo neurológicas. Un dato relevante es que, tras un año de seguimiento, el donante mallorquín infectado no experimentó síntomas ni secuelas.
El primer caso autóctono se identificó en Mallorca, donde el afectado no había salido de las islas en meses previos a la donación. El protocolo de cribado estacional, implementado para el control del Virus del Nilo Occidental, permitió detectar la presencia de Usutu durante los meses de máxima actividad de mosquitos.

Tras el caso de Mallorca se confirmaron dos infecciones adicionales en donantes de sangre de Cataluña. Ninguno de los implicados tenía antecedentes de viaje fuera de su comunidad autónoma, lo que demuestra circulación local del virus en la península ibérica.
La doctora Jiménez destacó a EFE que “este caso es un ejemplo emblemático del concepto de salud global”, subrayando la convergencia entre salud animal, humana y medioambiental.
El hallazgo pone de manifiesto la capacidad de los programas de vigilancia sanitaria españoles para detectar agentes emergentes y potencialmente peligrosos para la salud pública. También recalca la importancia de la supervisión reforzada en bancos de sangre durante las temporadas de actividad de mosquitos.

El estudio retrospectivo demostró que las pruebas destinadas a identificar el Virus del Nilo Occidental permiten también el rastreo precoz del virus Usutu, gracias a la reactividad cruzada observada en los laboratorios del Instituto de Salud Carlos III.
Este episodio ilustra el impacto de los cambios medioambientales, la migración de aves y la presencia de vectores en la dispersión de infecciones víricas en el continente europeo. Instituciones como el Banco de Sangre y Tejidos de Baleares, el Banco de Sangre y Tejidos de Cataluña, el Centro Nacional de Microbiología y distintas entidades internacionales colaboran actualmente en la vigilancia.
Entre las principales acciones, los bancos de sangre españoles y europeos reforzaron los controles en los periodos de mayor actividad de mosquitos. La vigilancia epidemiológica constante y la actualización de protocolos de detección buscan proteger especialmente a las personas inmunodeprimidas y a los pacientes que requieren transfusiones sanguíneas.
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INTERNACIONAL
José Daniel Ferrer: “Cuba termina el año en uno de los momentos más duros de su historia”

El opositor cubano José Daniel Ferrer, líder de la Unión Patriótica (UNPACU), envió este miércoles un mensaje a Infobae en el que afirmó que «Cuba termina el año 2025 atravesando uno de los momentos más duros de su historia“.
En su balance anual, el disidente expuso un panorama de opresión, hambre, apagones interminables y represión política, al tiempo que instó a la ciudadanía a asumir una postura activa y pacífica para evitar que el año entrante se repita la misma realidad.
Ferrer señaló que la isla afronta una coyuntura marcada por la crisis epidemiológica y sanitaria, el aumento de presos políticos, abusos en las prisiones y un éxodo constante de ciudadanos que buscan mejores condiciones fuera del país. “Nada de esto es accidente. Nada de esto es inevitable. Y nada de esto debe continuar”, afirmó el líder opositor, quien se encuentra en el exilio desde octubre pasado tras pasar años en prisión.
El mensaje detalló 10 pasos que deberían guiar a la sociedad cubana durante 2026. El primer punto alude a la necesidad de desmarcarse de las estructuras de control creadas por el régimen, como los Comités de Defensa de la Revolución (CDR), la Federación de Mujeres Cubanas (FMC), la Central de Trabajadores de Cuba (CTC) y otras organizaciones consideradas instrumentos para la represión social. Ferrer llamó a no participar en actos políticos ni actividades que busquen simular apoyo popular a la dictadura de Miguel Díaz-Canel.

El segundo aspecto planteado es la negativa a colaborar con la represión. “No reprimir a nadie. No delatar a quienes defienden pacíficamente los derechos humanos. Recordar siempre que ningún cubano debe ser enemigo de otro cubano”, expresó.
Un tercer punto hace hincapié en debilitar sin violencia las bases económicas de la opresión. El líder de la UNPACU exhortó a evitar financiar al régimen y priorizar la compra de bienes y servicios a ciudadanos independientes o neutrales.
Ferrer insistió en la importancia de fortalecer la sociedad civil libre mediante la creación y el apoyo a organizaciones cívicas, humanitarias, sindicales, artísticas y comunitarias independientes, así como en el respaldo a presos políticos y al periodismo independiente.
Otro de los puntos subrayó la urgencia de denunciar y documentar toda injusticia, compartiendo testimonios con organizaciones de derechos humanos y plataformas cívicas, siempre priorizando la seguridad de las personas involucradas. “Denunciar toda injusticia, abuso, violación a los derechos humanos y realidad que afecte a nuestro pueblo”, remarcó en el mensaje enviado a Infobae.
El escrito también propone acciones cívicas y no violentas para expresar el rechazo a la injusticia, y fomentar la creatividad y valentía en la resistencia. A quienes viven fuera de Cuba, Ferrer recomienda apoyar a sus familias, evitando al mismo tiempo financiar las estructuras económicas del Estado.
La unidad, la fraternidad y la solidaridad entre cubanos, el respaldo a artistas y comunicadores que defienden la libertad, y el apoyo mutuo en redes sociales y espacios públicos son otros de los ejes destacados.
En el plano internacional, pidió visibilizar la situación de Cuba en organismos como la ONU y la Unión Europea; y solicitó el apoyo de gobiernos democráticos.

Ferrer cerró con un llamado a preparar el futuro mediante la defensa de un liderazgo ético y no violento, el aumento del activismo humanitario y la promoción de paros y huelgas discretas como vía para alcanzar una huelga general que ponga fin a la dictadura. “Si asumimos con valentía y responsabilidad este camino cívico, solidario y no violento, si dejamos de sostener aquello que nos oprime y fortalecemos lo que nos dignifica, antes de que termine el 2026 podremos abrir el camino a la reconstrucción nacional”, aseguró el líder opositor.
Por último, hizo un llamado a la acción y a la esperanza de un país libre. “Podremos aspirar a una Cuba libre, justa y próspera; una Cuba ‘con todos y para el bien de todos’, como soñó Martí, como han deseado generaciones de cubanos dignos y como merecemos todos. La patria nos llama. El futuro depende de lo que hagamos hoy. Viva Cuba libre», concluyó.
INTERNACIONAL
Ukraine–Russia at a crossroads: How the war evolved in 2025 and what comes next

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President Donald Trump spent much of 2025 attempting what had eluded his predecessors: personally engaging both Russian President Vladimir Putin and Ukrainian President Volodymyr Zelenskyy in an effort to bring an end to the war in Ukraine. From high-profile summits to direct phone calls, the administration pushed for a negotiated settlement even as the fighting ground on and the map changed little.
By year’s end, the outlines of a potential deal were clearer than they had been at any point since Russia’s full-scale invasion, with U.S. and Ukrainian officials coalescing around a revised 20-point framework addressing ceasefire terms, security guarantees and disputed territory. But 2025 also made clear why the war has proven so resistant to resolution: neither battlefield pressure, economic sanctions nor intensified diplomacy were enough to force Moscow or Kyiv into concessions they were unwilling to make.
The Trump administration’s push for a deal
The year began with a high-profile fallout last February between President Donald Trump, Vice President JD Vance and Ukrainian President Volodymyr Zelenskyy, when the Ukrainian leader stormed out of the White House after Trump told him he did not have «any cards» to bring to negotiations with Russia.
Frustrated by the pace of talks after promising to end the war on «Day One» of his presidency, Trump initially directed his ire toward Zelenskyy before later conceding that Moscow, not Kyiv, was standing in the way of progress.
«I thought the Russia-Ukraine war was the easiest to stop but Putin has let me down,» Trump said in September 2025.
President Donald Trump met multiple times with Ukrainian President Volodymyr Zelenskyy throughout 2025. (Ukranian Presidency / Handout/Anadolu via Getty Images)
That frustration had already surfaced publicly months earlier as Russian strikes continued despite diplomatic engagement. «He talks nice and then he bombs everybody in the evening,» Trump said in July.
Trump’s outreach to Russian President Vladimir Putin culminated in a high-profile summit in Alaska in August, though additional meetings were later called off amid a lack of progress toward a deal.
ZELENSKYY ENCOURAGED BY ‘VERY GOOD’ CHRISTMAS TALKS WITH US
Still, Trump struck a more optimistic tone toward the end of the year. On Sunday, after meeting Zelenskyy at Mar-a-Lago, the president said the sides were «getting a lot closer, maybe very close» to a peace agreement, while acknowledging that major obstacles remained — including the status of disputed territory such as the Donbas region, which he described as «very tough.»
Trump said the meeting followed what he described as a «very positive» phone call with Putin that lasted more than two hours, underscoring the administration’s continued effort to press both sides toward a negotiated end to the war.
Where negotiations stand now
By the end of 2025, the diplomatic track had narrowed around a more defined — but still contested — framework. U.S. officials and Ukrainian negotiators have been working from a revised 20-point proposal that outlines a potential ceasefire, security guarantees for Ukraine, and mechanisms to address disputed territory and demilitarized zones.
Zelenskyy has publicly signaled openness to elements of the framework while insisting that any agreement must include robust, long-term security guarantees to deter future Russian aggression. Ukrainian officials have also made clear that questions surrounding occupied territory, including parts of the Donbas, cannot be resolved solely through ceasefire lines without broader guarantees.
Russia, however, has not agreed to the proposal. Moscow has continued to insist on recognition of its territorial claims and has resisted terms that would constrain its military posture or require meaningful concessions. Russian officials have at times linked their negotiating stance to developments on the battlefield, reinforcing the Kremlin’s view that leverage — not urgency — should dictate the pace of talks.

«I thought the Russia-Ukraine war was the easiest to stop but Putin has let me down,» Trump said in September 2025. (Getty Images/ Andrew Harnik)
The result is a negotiation process that is more structured than earlier efforts, but still far from resolution: positions have hardened even as channels remain open, and talks continue alongside ongoing fighting rather than replacing it.
Russia’s territorial pressure — and Ukraine’s limited gains
Even as diplomacy intensified in 2025, the war on the ground remained defined by slow, grinding territorial pressure rather than decisive breakthroughs. Russian forces continued pushing for incremental gains in eastern and southern Ukraine, particularly along axes tied to Moscow’s long-stated objective of consolidating control over territory it claims as Russian.
Russian advances were measured and costly, often unfolding village by village through artillery-heavy assaults and sustained drone use rather than sweeping offensives. While Moscow failed to capture major new cities or trigger a collapse in Ukrainian defenses, it expanded control in parts of eastern and southern Ukraine, maintaining pressure across multiple fronts and keeping territorial questions central to both the fighting and any future negotiations.

U.S. President Donald Trump speaks with Russian President Vladimir Putin, as they meet to negotiate for an end to the war in Ukraine, at Joint Base Elmendorf-Richardson in Anchorage, Alaska, U.S., August 15, 2025. (REUTERS/Kevin Lamarque)
Ukraine, for its part, did not mount a large-scale counteroffensive in 2025 comparable to earlier phases of the war. Ukrainian forces achieved localized tactical successes, at times reclaiming small areas or reversing specific Russian advances, but these gains were limited in scope and often temporary. None translated into a sustained territorial breakthrough capable of altering the broader balance of the front.
Instead, Kyiv focused on preventing further losses, reinforcing defensive lines, and imposing costs on Russian forces through precision strikes and asymmetric tactics. With decisive territorial gains out of reach, Ukraine expanded attacks against Russian energy infrastructure, targeting refineries, fuel depots and other hubs critical to sustaining Moscow’s war effort — including sites deep inside Russian territory.
ZELENSKYY SAYS FRESH RUSSIAN ATTACK ON UKRAINE SHOWS PUTIN’S ‘TRUE ATTITUDE’ AHEAD OF TRUMP MEETING
Russia, meanwhile, continued its own campaign against Ukraine’s energy grid, striking power and heating infrastructure as part of a broader effort to strain Ukraine’s economy, civilian resilience and air defenses. The result was a widening pattern of horizontal escalation, as both sides sought leverage beyond the front lines without achieving a decisive military outcome.
The result was a battlefield stalemate with movement at the margins: Russia advanced just enough to sustain its territorial claims and domestic narrative, while Ukraine proved capable of blunting assaults and imposing costs but not of reclaiming large swaths of occupied land. The fighting underscored a central reality of 2025 — territory still mattered deeply to both sides, but neither possessed the military leverage needed to force a decisive shift.

Firefighters surveying the scene from Russia’s missile attack on the Kharkiv Region in Ukraine. (Kharkiv Regional Governor Oleh Sunyiehubov Office/ via AP)
That dynamic would increasingly shape the limits of diplomacy. Without a major change on the battlefield, talks could test red lines and clarify positions, but not compel compromise.
Why talks stalled: leverage without decision
For all the diplomatic activity in 2025, negotiations repeatedly ran into the same obstacle: neither Russia nor Ukraine faced the kind of pressure that would force a decisive compromise.
On the battlefield, Russia continued to absorb losses while pressing for incremental territorial gains, reinforcing Moscow’s belief that time remained on its side. Ukrainian forces, though increasingly strained, succeeded in preventing a collapse and in imposing costs through deep strikes and attacks on Russia’s energy infrastructure — demonstrating an ability to shape the conflict even without major territorial advances.
Economic pressure also reshaped — but did not determine — Moscow’s calculus. Despite years of Western sanctions, Russia continued financing its war effort in 2025, ramping up defense production and adapting its economy to sustain prolonged conflict. While sanctions constrained growth and access to advanced technology, they raised the long-term costs of the war without producing the immediate pressure needed to force President Vladimir Putin toward concessions.

Ukrainian servicemen of the 44th artillery brigade fire a 2s22 Bohdana self-propelled howitzer towards Russian positions at the frontline in the Zaporizhzhia region, Ukraine, Wednesday, Aug. 20, 2025. (Danylo Antoniuk/AP Photo)
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Those realities defined the limits of U.S. mediation. While the Trump administration pushed both sides to clarify red lines and explore possible frameworks for ending the war, Washington could illuminate choices without dictating outcomes, absent a decisive shift on the ground or a sudden change in Moscow’s calculations.
The result was a year of talks that clarified positions without closing gaps. As long as pressure produced pain without decision, negotiations could narrow options and define boundaries, even if they could not yet bring the conflict to an end.
russia,ukraine,world,vladimir putin,volodymyr zelenskyy,foreign policy,wars,donald trump
INTERNACIONAL
Two African nations ban American citizens in diplomatic tit-for-tat following Trump admin move

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Two West African nations have issued a simultaneous ban on American citizens in a diplomatic tit-for-tat move, amidst heightened tensions with both the United States and Europe, and as Russia seeks to increase its economic and geopolitical influence in the region.
Dozens of Wagner forces were massacred in Mali following an ambush by Tuareg rebels on July 27, 2024. (East2West)
Mali and Burkina Faso made the move in response to the Trump administration’s Dec. 16 expansion of travel restrictions to more than 20 countries. The policy particularly affected the African continent, with Chad, Equatorial Guinea, Eritrea, Libya, Niger, Republic of the Congo, Sierra Leone, Somalia, South Sudan and Sudan also being subject to travel restrictions.
‘DEPART IMMEDIATELY’: STATE DEPARTMENT WARNS AMERICANS AS AL QAEDA THREATENS TO OVERRUN AFRICAN NATION
The Trump administration cited the persistence of armed attacks in both nations as part of the rationale for its decision:
«According to the Department of State, terrorist organizations continue to plan and conduct terrorist activities throughout Burkina Faso. According to the Fiscal Year 2024, Department of Homeland Security (DHS) Entry/Exit Overstay Report (‘Overstay Report’), Burkina Faso had a B-1/B-2 visa overstay rate of 9.16 percent and a student (F), vocational (M), and exchange visitor (J) visa overstay rate of 22.95 percent. Additionally, Burkina Faso has historically refused to accept back its removable nationals.»
Regarding its decision to include Mali on the list, it stated:
«According to the Department of State, armed conflict between the Malian government and armed groups is common throughout the country. Terrorist organizations operate freely in certain areas of Mali.»
Burkina Faso and Mali are both currently ruled by military juntas that came to power amidst rising violence and instability, as both nations came under attack from Islamist terrorist groups.

A mural is seen, March 1, 2023, in Ouagadougou, Burkina Faso. Military forces in Burkina Faso killed 223 civilians, including babies and many children, in attacks on two villages accused of cooperating with militants, Human Rights Watch said in a report published Thursday, April 24, 2024. (AP Photo, File)
Both nations have also seen a rise in anti-French sentiment, in conjunction with deepening relationships with Russia, which has pledged to offer assistance in fighting back the Islamist rebels battling the central governments for territorial control.
MILITARY-LED MALI SUSPENDS ALL POLITICAL ACTIVITY UNTIL FURTHER NOTICE
«In accordance with the principle of reciprocity, the Ministry of Foreign Affairs and International Cooperation informs the national and international community that, with immediate effect, the Government of the Republic of Mali will apply the same conditions and requirements to US nationals as those imposed on Malian citizens,» the Malian Ministry of Foreign Affairs stated.

Malian soldiers check a vehicle in the garrison town of Kati, Mali, on Tuesday, Aug. 18, 2020. Malian soldiers took up arms and began detaining senior military officers in an apparent mutiny, raising fears of a potential coup after several months of anti-government demonstrations calling for the president’s resignation. (AP Photo/Mohamed Salaha)
Burkina Faso’s government cited a similar rationale for issuing its ban on American travelers.
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Both nations, as well as neighboring Niger and Nigeria, have seen skyrocketing violence in recent years, as chronically underfunded governments struggle to retain control of rural, sparsely-populated desert regions.
The Associated Press contributed to this report.
africa,terrorism,foreign policy
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