Breaking Viruses with Sound? New Study Shows Ultrasound Can Burst COVID-19 and Flu

Instead of suppressing viruses with drugs or preempting them with vaccines, this research aims to destroy the viruses themselves using the "power of sound." This seemingly science fiction-like study is garnering attention as a real scientific paper.

A research team from the University of São Paulo in Brazil has demonstrated the potential of using high-frequency ultrasound to disrupt and inactivate the structure of SARS-CoV-2, the virus causing COVID-19, and the H1N1 influenza virus. The findings have been published in Scientific Reports and reported by Phys.org and FAPESP.

The key point is that ultrasound does not "burn the virus with heat" or "chemically destroy it like a drug." The research team focused on a phenomenon called "acoustic resonance," where sound waves shake the virus particles' structure, causing their membranes and outer shells to become unsustainable.

The Concept of Breaking Viruses with "Screams"

Reports describe this mechanism as akin to "fighting viruses with screams." Of course, it's not about humans shouting to break viruses. Instead, it involves using high-frequency ultrasound that is inaudible to human ears.

In this study, high-frequency ultrasound ranging from 3 to 20 MHz was examined. This frequency range is close to that used in medical imaging diagnostics. However, it differs from the ultrasound known for cleaning and sterilizing equipment. In cleaning ultrasound, "cavitation," where tiny bubbles in a liquid collapse violently, plays a central role. While powerful, cavitation can also easily damage surrounding biological tissues.

The research team aimed not at the destructive action of collapsing bubbles with low-frequency but at the action of accumulating vibrational energy in the virus particles themselves using MHz-range ultrasound. The envelope surrounding the virus vibrates, distorts, and eventually tears. Researchers liken this to the "popcorn effect," where the virus bursts from within.

Structural Changes Confirmed in SARS-CoV-2 and H1N1

The paper reports that both SARS-CoV-2 and H1N1 influenza virus particles showed changes in size and structure after ultrasound exposure.

In SARS-CoV-2, untreated virus particles showed a relatively uniform size distribution, whereas after ultrasound treatment, peaks indicating smaller fragments appeared. This suggests the possibility of partial disintegration or fragmentation of the virus particles. In H1N1, a clear particle signal disappeared within the measurable range after treatment, indicating more extensive structural collapse.

Further observation using scanning electron microscopy and atomic force microscopy revealed that the outer contour of SARS-CoV-2 collapsed, with dents and tears forming on the surface, changing the smooth virus particles into irregular shapes. This indicates that not only the size changed, but the envelope and surface structures crucial for infection were also compromised.

Infectivity Decreased, But In Vitro Study

If only the structure is broken, it could be said that only the "appearance changed." The important question is whether this leads to a decrease in infectivity.

The research team infected cells with ultrasound-treated SARS-CoV-2 and examined signals of the virus's spike protein and double-stranded RNA, indicators of replication. The results showed that under specific conditions, signals indicating infection and replication were significantly suppressed. Particularly around 7.5 MHz, the effect was strong enough that viral antigens and replication signals almost disappeared in the wild-type SARS-CoV-2.

However, caution is needed here. This study is primarily in vitro, meaning it was conducted in test tubes or cultured cells. Whether the same targeted destruction of viruses can be achieved in the human body, and whether ultrasound can be safely and sufficiently delivered to viruses deep in the lungs, nasal passages, blood, and tissues, still requires verification.

It's premature to conclude that "COVID-19 and influenza can be treated with ultrasound." At present, it is more accurate to understand it as "under specific conditions, ultrasound may physically destroy virus particles and reduce infectivity."

Why Are Only Viruses Destroyed While Cells Are Less Affected?

The reason this research is attracting attention is not merely because it destroyed viruses. With enough energy, many things can be destroyed. The issue is whether viruses can be targeted while avoiding damage to the human body.

According to the research team, the key lies in "shape" and "size." Envelope viruses, which are nearly spherical, easily absorb specific frequencies of ultrasound energy. The sound energy accumulates inside the particles, causing mechanical stress on the outer shell and envelope. As a result, the virus particles distort, tear, and lose the structures necessary for infection.

On the other hand, host cells are much larger and structurally different from viruses, making them less likely to absorb energy in the same way in the same sound field. The paper emphasizes that this is a non-thermal, non-chemical mechanism due to MHz-range resonance, unlike low-frequency cavitation, which indiscriminately damages the surroundings by collapsing bubbles.

However, to definitively state that "there is no effect on cells at all," further verification with a variety of cell types, tissues, animal models, and ultimately clinical trials is necessary. If considering medical applications, there are many items to confirm, such as frequency, output, irradiation time, irradiation site, attenuation within tissues, heat generation, and effects on immune responses.

Is It Effective Against Variants?

One of the points researchers are hopeful about is that this method relies on the physical shape of the virus, not its genetic sequence.

Antiviral drugs often target viral enzymes or specific proteins. Therefore, if mutations change the target's shape, the effectiveness may weaken. Vaccines can also lose their infection-preventive effect if the recognized site by the immune system changes.

In contrast, physical destruction through acoustic resonance utilizes the major structural feature that viruses are nearly spherical particles with envelopes. Theoretically, as long as the physical properties of the entire particle do not change significantly, the effect may be maintained even if part of the spike protein mutates.

However, the paper also indicates that differences in susceptibility were observed among the wild-type, Gamma variant, and Delta variant of SARS-CoV-2. Particularly in the Gamma and Delta variants, residual signals were confirmed under certain conditions, suggesting that optimal frequency conditions are crucial. Therefore, it should be viewed as "the optimal conditions may vary for each variant" rather than "universal regardless of mutations."

Distance from Existing Ultrasound Medicine

Medical ultrasound is widely used in prenatal checkups, heart, abdominal, and vascular examinations. It is a familiar technology as a non-invasive imaging diagnosis that does not use radiation. Therefore, one might hope, "Can existing hospital machines be used for virus treatment?"

However, using it for diagnosis and delivering targeted energy for treatment are separate issues. Diagnostic ultrasound is designed to obtain images and is not optimized to consistently cause resonance destruction of virus particles for therapeutic purposes. Reproducing the conditions used in the study within the complex tissues of the human body may require specialized device design and irradiation protocols.

Moreover, in respiratory infections, viruses exist in multiple locations such as the nasal cavity, throat, airways, and lungs. The lungs contain a lot of air, making ultrasound transmission difficult. When delivering energy to deep tissues, the impact on surrounding tissues and heat accumulation must also be carefully evaluated.

Nevertheless, the concept of a physical antiviral strategy is highly appealing. It is less likely to create drug resistance, does not use chemicals, and may not depend on specific viral proteins. Researchers are also conducting tests on other envelope viruses like dengue, chikungunya, and Zika.

Mixed Reactions on Social Media

This news has been featured on Reddit's r/science and r/Futurology. The reactions reflect a mix of scientific curiosity, humor typical of social media, and cautious skepticism.

The most noticeable reaction is the expectation of "Can this really lead to treatment?" Developing antiviral drugs takes time and cost, and their effectiveness can be undermined by viral mutations. Therefore, interest in a physical approach different from drugs is natural. Especially since it involves common infectious diseases like COVID-19 and influenza, some people perceive it as a potential new option for respiratory viruses in the future.

On the other hand, technical questions quickly emerged in the comments section. For example, there were questions about "What is the frequency?" with responses focusing on the 3-20 MHz conditions mentioned in the paper's abstract and the strong effects observed around 7.5 MHz. This is a very important perspective. Even though it's all called ultrasound, the mechanism of action and safety differ between low-frequency cleaning ultrasound and high-frequency ultrasound used in medical imaging diagnostics.

There were also jokes like "Do we have to go to the mountains for training every time we catch the flu?" This likely stems from the expression of breaking viruses with sound or screams, which evokes the "shout" from games and fantasy. When scientific news spreads on social media, such metaphors can aid understanding but also lead to misunderstandings. In reality, this research involves using controlled ultrasound with specific frequencies, output, and irradiation time, not breaking viruses with voices or music.

Furthermore, in medical and scientific communities, the calm perspective of "This is still at the in vitro stage" is crucial. There is a significant difference between applying ultrasound to a virus suspension in a test tube and achieving the same effect safely in the infection site within the human body. The social media reactions center not just on simple praise but on the understanding that "it's interesting, but there's still a long way to go for clinical application."

Should Be Viewed as a "New Entry Point" Rather Than Overhyped Expectations

This study does not announce a treatment method that can be immediately used in hospitals. It is not about curing people infected with COVID-19 or influenza by undergoing ultrasound examinations. Nor does it mean that home ultrasound devices or beauty devices can treat infections.

What is more important is that it presents a new entry point of "physically destroying" viruses. Until now, virus countermeasures have focused on biological, chemical, and public health methods such as vaccines, antiviral drugs, disinfection, ventilation, masks, and immune control. Now, there is a possibility of adding a physical approach that destroys virus particles with precisely tuned sound waves.

If safe irradiation conditions for specific viruses are established in the future, it could lead to adjunctive therapies for local infection sites, advanced sterilization of medical equipment, processing of blood and body fluid-derived samples, or new treatment strategies combined with drugs.

However, there are high hurdles for application in the human body. Viruses do not float alone in the body but exist within cells, mucus, blood, immune components, and tissue structures. It is necessary to find conditions that deliver sufficient energy to the virus while not harming surrounding tissues. Moreover, the required irradiation methods may differ for acute infections with high viral loads, latent infections, chronic infections, and systemic infections.

How Far Will "Sound Medicine" Advance?

Ultrasound is already used in medicine not only for diagnosis but also for treatment. Medical technologies using sound waves are expanding, including lithotripsy, focused ultrasound therapy, tumor applications, and drug delivery assistance. This study places a new theme of "targeting the virus particles themselves" on that continuum.

Interestingly, because viruses are so small, it was traditionally thought that interactions with ultrasound would be unlikely. The wavelength of ultrasound is much longer than virus particles. Nevertheless, the possibility was shown that nearly spherical particles absorb energy and their structure collapses due to internal vibrations. Here lies the intriguing intersection of physics and virology.

The future direction for this research is clear. First, investigate whether similar effects occur in more virus species. Second, verify safety in various human-derived cells and tissue models. Third, evaluate the potential for in vivo application in animal models. Fourth, refine irradiation conditions, device design, and treatment targets for use as actual medical devices.

Conclusion: There Is Hope, But It's Not Yet a "Treatment"

This news is highly intriguing. It suggests the possibility of breaking viruses related to many people, like COVID-19 and influenza, with high-frequency ultrasound instead of drugs. Moreover, it may selectively destroy virus particles using their shape and structure, unlike low-frequency cavitation that indiscriminately destroys the surroundings.

However, the correct interpretation at this point is not "a new treatment has been completed" but "a phenomenon that may lead to a new treatment has been demonstrated in the laboratory." The excitement on social media also includes both expectations and caution, reflecting an important attitude when reading scientific news.

Many major discoveries start with small laboratory results. The idea of shaking the virus shell with sound waves and depriving it of its infective ability is just the beginning. Still, if a new option of "tuning the frequency to destroy" is added to the future of antiviral strategies, the way we fight infectious diseases may change slightly.

Source URL

Phys.org: A news article introducing the study to the general public. Refer to the research overview, researcher comments, "popcorn effect," and the distance to clinical application.
https://phys.org/news/2026-05-ultrasound-rupture-covid-flu-viruses.html

Scientific Reports Published Paper: The original paper demonstrating the potential of high-frequency ultrasound to destabilize the structure of SARS-CoV-2 and H1N1, reducing infectivity. Refer to frequency, experimental conditions, microscopic observations, and infectivity evaluation.
https://www.nature.com/articles/s41598-026-37584-x

Agência FAPESP Article: Refer to the research team's affiliation, researcher comments, expansion to other viruses like dengue, Zika, chikungunya, and the explanation that clinical application is still far off.
https://agencia.fapesp.br/scientists-use-ultrasound-to-destroy-influenza-a-and-covid-19-viruses-without-damaging-human-cells/57968

Reddit r/science Post: As an example of reactions on social media, refer to questions about frequency, interest in the research abstract, and the flow of cautious discussion.
https://www.reddit.com/r/science/comments/1t66yq5/scientists_use_ultrasound_to_destroy_influenza_a/

Reddit r/Futurology Post: As an example of reactions on social media, refer to the tendency of comments mixing expectations for future technology and humor.
https://www.reddit.com/r/Futurology/comments/1t67786/scientists_use_ultrasound_to_destroy_influenza_a/