الصحة العالمية”: تفشي فيروس “هانتا” لا يشكل بداية جائحة – البيان

The World Health Organization (WHO) has stated that a recent increase in Hantavirus cases does not constitute the beginning of a pandemic. In a communication released on May 8, 2026, the agency clarified that the biological characteristics of the virus and the nature of its transmission limit its potential for the widespread, sustained human-to-human spread required to trigger a global pandemic.

The assessment follows reports of localized outbreaks that prompted public concern regarding the possibility of a new respiratory pandemic. Public health officials emphasized that while the virus can cause severe illness and high mortality rates in individual cases, it remains primarily a zoonotic disease, meaning it jumps from animals to humans rather than circulating efficiently within human populations.

According to the WHO, the risk to the general global population remains low. The organization noted that the current clusters of infection are consistent with known patterns of rodent-to-human transmission, where humans are exposed to the virus through contact with infected wildlife.

Medical researchers distinguish Hantaviruses from other respiratory pathogens by their specific transmission vectors. Hantaviruses are carried by various species of rodents, including deer mice, cotton rats, and rice rats. Humans typically become infected by inhaling aerosolized particles of virus-laden urine, droppings, or saliva, often during the cleaning of sheds, barns, or other enclosed spaces where rodents have nested.

The clinical manifestation of the virus varies by region and strain. In the Americas, the most prominent form is Hantavirus Pulmonary Syndrome (HPS). This condition is characterized by a rapid progression from flu-like symptoms to severe respiratory distress, as the virus causes capillaries in the lungs to leak fluid, effectively leading to pulmonary edema.

In Europe and Asia, the virus more commonly manifests as Hemorrhagic Fever with Renal Syndrome (HFRS). This variant primarily attacks the kidneys, leading to acute kidney failure, fever, and internal bleeding. While both HPS and HFRS are serious and can be fatal without supportive care, they do not possess the inherent capability for the rapid, airborne human-to-human transmission seen in pandemic influenza or coronaviruses.

Health experts highlight one rare exception to this rule: the Andes virus found in South America. Research has indicated that the Andes virus can occasionally spread between humans in very close contact. However, the WHO maintains that these instances are sporadic and have not demonstrated the ability to sustain community-level transmission on a global scale.

To manage the current outbreaks, public health agencies are focusing on environmental controls and rodent mitigation. The primary prevention strategy involves reducing the presence of rodents in residential and agricultural areas. Guidance from health bodies suggests that individuals avoid sweeping or vacuuming rodent-infested areas, as these actions can stir up contaminated dust into the air.

Instead, health authorities recommend wetting contaminated surfaces with a disinfectant or a bleach solution before cleaning to prevent the virus from becoming airborne. Proper ventilation of enclosed spaces before entry is also a critical safety measure for those working in high-risk environments.

The diagnosis of Hantavirus remains a challenge in early stages because initial symptoms—such as fever, muscle aches, and fatigue—mimic many other viral infections. Definitive diagnosis typically requires serological testing to detect specific antibodies or polymerase chain reaction (PCR) tests to identify the viral RNA.

There is currently no widely available vaccine for Hantavirus in most parts of the world, although some versions have been developed and used in specific regions like China for HFRS. Treatment is primarily supportive, involving oxygen therapy and, in severe cases of HPS, mechanical ventilation in an intensive care unit.

The WHO continues to monitor the genetic evolution of Hantavirus strains to ensure that any shift in transmission dynamics is detected early. While the agency has ruled out a pandemic trajectory as of May 8, 2026, the focus remains on enhancing surveillance in rural areas where human-wildlife interfaces are most frequent.

Public health officials urge the public to rely on verified data from the WHO and national health ministries to avoid misinformation. The agency reiterated that vigilance and rodent control are the most effective tools in preventing the spread of the virus.