Researchers in Brazil have unveiled a groundbreaking method to combat viruses such as COVID-19 and influenza, utilizing high-frequency ultrasound waves to rupture viral particles without causing damage to human cells. This discovery, published in the journal Scientific Reports, could signal a new era for non-invasive antiviral treatments.
How Ultrasound Attacks Viruses
The study, led by physicist Odemir Martinez Bruno at the University of São Paulo, found that ultrasound frequencies between 3 and 20 MHz can destabilize enveloped viruses, including SARS-CoV-2 and H1N1 influenza. This occurs through a process called “acoustic resonance,” which the scientists liken to a “popcorn effect.” The sound-wave energy accumulates within the virus particle, eventually causing its protective outer membrane to rupture, rendering it incapable of infecting cells.
Crucially, the ultrasound frequencies employed are similar to those used in diagnostic medical imaging, meaning they do not generate harmful heating or tissue damage. Instead, the vibrations selectively target and destabilize viruses while leaving healthy cells intact. This technique relies on the unique geometry of viruses, with spherical viruses proving particularly susceptible to absorbing the ultrasound energy.
A New Strategy Against Viral Threats
Unlike conventional antiviral drugs that often target specific viral proteins and can lose effectiveness as viruses mutate, the ultrasound approach directly attacks the physical structure of the virus. This inherent mechanism suggests that new variants, such as Delta or Omicron, would be unlikely to evade the treatment.
Furthermore, researchers highlighted the technology's environmental benefits, noting that it does not produce chemical waste or contribute to the development of viral resistance. The team is actively investigating whether this same method can be applied to other enveloped viruses, including those responsible for dengue, Zika, and chikungunya.
The Road Ahead for Ultrasound Treatment
While the findings are highly promising, scientists emphasize that the technology remains in its experimental phase. Current results are primarily based on laboratory and in-vitro studies. Significant further research will be necessary to determine the safety and efficacy of using ultrasound inside the human body before any clinical deployment.
Despite being far from immediate hospital use, the discovery has generated considerable excitement. It offers a fundamentally different strategy for combating viral infections, rooted in physics rather than chemistry, and challenges previous assumptions about the interaction of ultrasound waves with microscopic viral particles.