GENEVA — The World Health Organization has declared the rapid spread of a new, more dangerous strain of mpox a “public health emergency of international concern,” activating a global response as cases surge across central Africa. The declaration, announced Wednesday by WHO Director-General Dr. Tedros Adhanom Ghebreyesus, signals the highest level of alarm under international health law and aims to accelerate funding, research, and coordination of containment efforts.
The emergency comes amid an explosion of infections in the Democratic Republic of Congo and neighboring countries, driven by the clade Ib variant, which health officials say is both more transmissible and more lethal than the strain that sparked the 2022 global outbreak. Since January 2023, the DRC has reported more than 15,000 suspected cases and over 530 deaths—the deadliest wave in the country’s history. Children under 15 account for nearly 70% of fatalities, raising particular alarm among pediatric health specialists.
“We are dealing with a virus that has changed its behavior and is now spreading in ways we have not seen before,” Dr. Tedros said during a press conference. “Without immediate international support, this outbreak could spiral into a much larger crisis.”
A New, More Dangerous Strain
The clade Ib variant, first identified in the DRC’s South Kivu province, differs from the clade IIb virus that spread globally in 2022. That earlier outbreak primarily affected men who have sex with men and was largely controlled through targeted vaccination and behavioral changes. The current strain, however, appears to spread efficiently through routine household contact and heterosexual transmission, infecting women and young children at alarming rates.
“We are seeing mothers and children in the same household all infected, with the children presenting much more severe symptoms,” said Dr. Jean-Jacques Muyembe, director of the DRC’s National Institute of Biomedical Research. “This is a new epidemiology, and it demands a new strategy.”
Symptoms of the new variant include painful, widespread lesions, fever, swollen lymph nodes, and exhaustion. Secondary bacterial infections and sepsis have been cited as leading causes of death, particularly among malnourished children with limited access to healthcare.
Vaccine Access Remains Critical Barrier
Despite the escalating crisis, access to vaccines remains severely limited. The WHO estimates that the DRC requires at least 10 million doses to contain the outbreak, yet fewer than 200,000 have been made available through donations. The two-dose MVA-BN vaccine, manufactured by Bavarian Nordic, remains the only WHO-approved mpox vaccine, and production capacity has not kept pace with demand.
The African Centres for Disease Control and Prevention has called on wealthier nations to release their stockpiles and for manufacturers to transfer technology to African producers. “We cannot rely on charitable donations alone,” said Dr. Kaseya Ndumbi, acting director of the Africa CDC. “We need a coordinated, sustainable mechanism for vaccine equity.”
The WHO has activated its emergency use listing procedure to accelerate regulatory approval for additional vaccines, including the Japanese LC16m8 vaccine, which has shown promise in clinical trials. Meanwhile, emergency response teams are being deployed to affected regions to strengthen surveillance, contact tracing, and community education.
Broader Implications
The emergency declaration—only the second related to mpox—carries significant geopolitical weight. It obligates WHO member states to share data, fund response efforts, and implement temporary public health measures. However, critics note that similar declarations for COVID-19 and Ebola did not always translate into rapid action from donor countries.
For African nations already grappling with cholera, measles, and malaria outbreaks, mpox adds yet another burden to fragile health systems. The WHO has stressed that containment is possible but requires immediate investment in diagnostics, infection control supplies, and healthcare worker training.
What Happens Next
Global health authorities are urging countries to prioritize surveillance at points of entry, support community-led awareness campaigns, and fund research into antiviral treatments and next-generation vaccines. The WHO has released a $15 million appeal for the initial response, though far larger sums are expected to be needed.
For families in South Kivu like that of Mama Christine, a 34-year-old mother of five who lost two children to the virus last month, the emergency declaration comes too late. “They told me it was a rash,” she said from her village clinic, holding a photograph of her children. “Now I know it is something much more. I hope other mothers will not suffer the same.”
As the world watches, the clock is ticking for Africa’s most vulnerable. The question remains whether the international community will act with the speed and scale the crisis demands—or repeat the cycle of neglect that has cost too many lives.
What you can do: Support organizations like WHO’s Contingency Fund for Emergencies, Doctors Without Borders, or the Africa CDC’s mpox response fund. Stay informed through WHO and local health authority updates.
