Children under fifteen account for eighty-seven percent of deaths
En las profundidades del corazón de África, una variante del mpox más letal que sus predecesoras avanza silenciosamente a través de fronteras que nunca antes había cruzado, llevándose consigo vidas que en su mayoría pertenecen a niños. La Organización Mundial de la Salud contempla declarar una emergencia sanitaria internacional mientras la República Democrática del Congo registra más de 13.000 infecciones y 450 muertes, y los países vecinos reportan sus primeros casos. Es el recordatorio perenne de que en un mundo interconectado, la vulnerabilidad de unos pocos se convierte, con el tiempo, en la preocupación de todos.
- Una cepa del mpox designada clado I está demostrando ser significativamente más mortal que variantes anteriores, con una tasa de letalidad que ha encendido las alarmas en Ginebra y en las capitales africanas.
- El patrón epidemiológico es inusual y perturbador: los menores de 15 años representan el 70% de los contagios y el 87% de las muertes, una concentración entre los más jóvenes que no tiene precedente en brotes anteriores de mpox.
- El virus ya ha cruzado fronteras hacia Kenya, Ruanda y Burundi —países que nunca habían registrado un solo caso— y un contagio detectado en Kenya durante la temporada turística alta ha generado preocupación por las rutas de viaje internacionales.
- El director general de la OMS evalúa convocar un comité de emergencia para determinar si el brote merece una declaración formal de emergencia sanitaria internacional, un mecanismo que podría movilizar recursos y atención global.
- Las vacunas existen y están aprobadas, pero el acceso en los países africanos más afectados sigue siendo un cuello de botella crítico, con organizaciones como Médicos Sin Fronteras advirtiendo que los esfuerzos actuales son insuficientes para contener el avance.
La Organización Mundial de la Salud evalúa declarar una emergencia sanitaria internacional ante la expansión de una variante especialmente letal del mpox en África. El epicentro es la República Democrática del Congo, donde el clado I del virus ha causado más de 450 muertes y más de 13.000 infecciones. Lo que distingue a este brote no es solo su escala, sino su patrón: los menores de 15 años concentran el 70% de los contagios y el 87% de las muertes, una señal que ha generado alarma entre los epidemiólogos.
El virus, endémico en once provincias congoleñas desde hace años, ha acelerado su expansión de forma dramática desde 2022, triplicando casos tanto en 2023 como en 2024. Ahora cruza fronteras: Kenya, Ruanda y Burundi han reportado sus primeros casos, y Sudáfrica suma veinte infecciones con tres fallecidos. Un caso detectado en Kenya durante la temporada turística alta ha encendido alertas sobre la movilidad internacional como vector de dispersión.
El director general de la OMS, Tedros Adhanom Ghebreyesus, anunció que considera convocar un comité de emergencia. Una declaración formal tendría peso político y simbólico: obligaría a gobiernos y donantes a movilizar recursos. La última vez que la OMS declaró emergencia por mpox fue entre 2022 y 2023, cuando una variante más leve afectó a casi 100.000 personas en el mundo. El clado I actual es considerablemente más mortal.
Las vacunas preventivas existen y han sido aprobadas por la OMS, pero el acceso en los países más afectados sigue siendo insuficiente. Médicos Sin Fronteras advierte que se necesitan dosis en mayor cantidad y que la respuesta debe ir más allá de la vacunación: pruebas de laboratorio, vigilancia epidemiológica, apoyo al aislamiento y atención médica requieren financiamiento y coordinación que hoy escasean. Sin un respaldo internacional sustancial, contener el brote será difícil.
The World Health Organization is weighing whether to declare a global health emergency as a particularly lethal strain of mpox spreads across Africa, killing more than 450 people and infecting thousands more. The outbreak centers in the Democratic Republic of Congo, where a new variant of the virus—designated clade I—has proven far deadlier than previous versions. From there, cases have begun appearing in neighboring countries that had never recorded a single infection before: Kenya, Rwanda, and Burundi have all reported patients, raising alarms about the virus's capacity to cross borders.
The disease, renamed mpox in 2022 to reduce stigma, is not new to the region. It has been endemic in eleven of the Congo's twenty-six provinces for years. But the trajectory has shifted dramatically. Since 2022, when the country declared an epidemic, case numbers have climbed steadily—tripling in 2023 and again in 2024. The Congo alone now counts more than 13,000 confirmed infections. What makes this outbreak distinctly alarming is not just its scale but its pattern. Children under fifteen account for seventy percent of all infections and eighty-seven percent of deaths, a concentration among the young that differs sharply from previous mpox patterns and has prompted serious concern among epidemiologists.
Tedros Adhanom Ghebreyesus, the WHO's director general, announced on Sunday that he is considering convening an emergency committee to advise whether the outbreak warrants a declaration of international public health emergency. Such a declaration carries weight: it signals to governments and donors that resources must be mobilized, that borders may need monitoring, that the world should pay attention. The last time the WHO made such a declaration for mpox was from July 2022 to May 2023, when a milder variant infected nearly 100,000 people globally. The current clade I strain is substantially more lethal, and the organization is taking the possibility seriously.
The spread itself tells a story of how quickly disease moves in an interconnected world. South Africa has reported twenty cases, three fatal. Kenya's single confirmed case arrived during peak tourist season, when thousands of travelers move between Europe and Africa weekly—a timing that has set off particular concern. Other African nations have detected cases in people who traveled from the Congo, suggesting the virus is already moving along established routes of human movement.
Maria Van Kerkhove, the WHO's director of epidemic and pandemic preparedness, acknowledged from Geneva that the outbreak is expanding across the continent and into surrounding regions. She also raised a methodological question worth noting: it remains unclear whether the rising case counts reflect a genuine surge or whether African countries, now more alert to mpox and with improved surveillance systems, are simply catching and reporting cases they might have missed before. The distinction matters for understanding the true trajectory, though either way the presence of clade I in new territories is cause for vigilance.
The virus itself spreads through contact with infected animals—particularly rodents—and from person to person via direct contact with blood, bodily fluids, skin lesions, or contaminated objects. It announces itself through fever, headache, and muscle pain, but its signature is a rash that forms in blisters, appearing on the face, back, palms, soles, genitals, and anal areas. One element that has alarmed the WHO is the emergence of significant outbreaks among adults transmitted sexually in areas previously unaffected—a shift in epidemiology that suggests the virus is finding new pathways through populations.
Vaccines exist and have been approved, and the WHO is working to deploy them among high-risk groups. But access remains a critical bottleneck. Médecins Sans Frontières and other organizations have repeatedly warned that African populations face severe difficulty obtaining these vaccines, and that doses need to arrive in far greater quantities to the hardest-hit regions. The coordinator for MSF in the Congo emphasized that vaccines alone will not solve the crisis. Laboratory testing, surveillance, isolation support, public awareness, and patient care all require resources and coordination that currently fall short. Without substantial additional funding and a unified response from multiple actors, the organization warns, the outbreak will be difficult to contain.
Tedros himself underscored this point, noting that while local governments are intensifying their response, a comprehensive solution demands greater financial support and international backing. The question now is whether a formal emergency declaration will unlock the resources and political will needed to match the scale of the threat.
Citas Notables
I am considering convening an Emergency Committee of the International Health Regulations to advise me on whether the mpox outbreak should be declared a public health emergency of international concern— Tedros Adhanom Ghebreyesus, WHO Director General
We are seeing an expansion of the outbreak on the continent, in the Democratic Republic of Congo, but also in certain neighboring countries in the region— Maria Van Kerkhove, WHO Director of Epidemic and Pandemic Preparedness
La Conversación del Hearth Otra perspectiva de la historia
Why is this outbreak different from the one in 2022 that the WHO already declared an emergency for?
The earlier outbreak was caused by a milder variant—clade II—that infected nearly 100,000 people globally but had a much lower death rate. This new strain, clade I, kills a far higher proportion of those it infects. And it's hitting children especially hard, which is unusual and deeply concerning.
What do you mean by hitting children hard? Is mpox typically a disease of adults?
Previous mpox outbreaks didn't show this pattern. But in this outbreak in the Congo, seventy percent of infections are in children under fifteen, and eighty-seven percent of the deaths occur in that age group. That's a red flag that something about this variant or the conditions it's spreading in is different.
How is it getting to countries like Kenya that have never seen it before?
Travelers. Someone infected in the Congo traveled to Kenya during tourist season. Cases in other countries came from people who had been in the Congo. The virus moves along the same routes people do—it's not magic, just epidemiology.
If vaccines exist, why isn't that solving the problem?
Because the vaccines aren't reaching the people who need them. African countries are struggling to access doses in the quantities required. It's a supply and distribution problem, not a science problem. You can have the best vaccine in the world and it doesn't matter if it's sitting in a warehouse in Europe.
What would an emergency declaration actually do?
It signals to governments and international donors that this is serious, that resources need to flow, that coordination matters. It's a tool for mobilizing attention and money. But the declaration itself doesn't cure anyone—it just makes it easier to get the support needed to actually respond.
Is there any chance this is being overstated—that the cases are just being reported better now?
That's a fair question, and the WHO's own experts have raised it. Better surveillance and awareness in African countries could explain some of the increase. But even if that's partly true, the fact remains: clade I is in new countries, it's more lethal, and children are dying at rates we haven't seen before. You can't explain that away with better reporting.