{"id":13288,"date":"2026-11-05T15:20:16","date_gmt":"2026-11-05T04:20:16","guid":{"rendered":"https:\/\/tristel.com\/au-en\/latest-news\/\/"},"modified":"2026-11-05T15:20:44","modified_gmt":"2026-11-05T04:20:44","slug":"adenovirus-ent-instrument-disinfection","status":"publish","type":"post","link":"https:\/\/tristel.com\/au-en\/latest-news\/adenovirus-ent-instrument-disinfection\/","title":{"rendered":"Under the microscope: Adenovirus"},"content":{"rendered":"\n
\"\"<\/span>
<\/span>Under the Microscope<\/span><\/a>

Pathogen profile<\/p>

Adenovirus\"\"<\/span><\/p>

Through the lens of ENT care<\/p>

Type<\/p>

DNA virus without a fatty outer envelope<\/p><\/div>

Found in<\/p>

The respiratory tract, including tonsils and adenoids<\/p><\/div>

Spreads through<\/p>

Respiratory secretions, droplets, close contact, hands and objects<\/p><\/div>

Commonly causes<\/p>

Respiratory illness, from cold-like symptoms to pneumonia<\/p><\/div><\/div><\/div><\/div>\n

Jump to a section<\/p>

What it is<\/a>Where it’s found<\/a>Illness<\/a>How it spreads<\/a>Why it’s a threat<\/a>Prevention<\/a>Instruments<\/a>EN standards<\/a><\/div><\/div>\n

Examining the nose and throat brings ENT clinicians close to patients and their respiratory secretions. Reusable instruments may also touch mucous membranes, the moist lining of these areas. Adenovirus offers a useful lens through which to understand why infection prevention matters at each examination.⁠[1, 2, 5]<\/sup><\/p>\n

At Tristel, we explain the science behind infection prevention in everyday practice. Here, we look at adenovirus through the lens of ENT care, from its presence in the respiratory tract to the evidence needed for effective instrument disinfection.<\/p>\n<\/span>

What is adenovirus?<\/h2>\n

Adenoviruses are DNA viruses without a fatty outer envelope. Instead, a protein shell protects their genetic material.⁠[1, 2]<\/sup><\/p>\n

Why structure matters<\/p>

This structure is relevant to disinfection<\/h3>
<\/span><\/span><\/span>

Enveloped viruses<\/p>

Have a fatty outer envelope.<\/p><\/div>

<\/span><\/span><\/span>

Adenovirus<\/p>

No envelope. A protein shell protects its genetic material.<\/p><\/div><\/div>

Activity against enveloped viruses cannot automatically be assumed to cover adenovirus.<\/span>⁠[1, 2]<\/sup><\/p><\/div>\n<\/span>

Where is adenovirus found?<\/h2>\n

Adenovirus can be present in the respiratory tract, including tonsils and adenoids, and may be released in respiratory secretions. Contaminated hands and objects can also carry it.<\/p>

Its presence in these tissues makes it relevant to examinations of the nose and throat.⁠[2, 3]<\/sup><\/p><\/div>

\"ENT<\/figure><\/div>\n

US study, 2025<\/p>

12.5%<\/p>

65 of 522 children<\/p><\/div>

A US study published in December 2025 detected adenovirus DNA in tonsil tissue from 65 of 522 children, or 12.5%, undergoing elective surgery without acute respiratory symptoms. Samples were collected in 2018\u20132020.⁠[3]<\/sup><\/p>

<\/span>DNA detection alone does not establish infectious virus or transmission to another person.<\/span><\/p><\/div><\/div>\n<\/span>

What illness can it cause?<\/h2>\n

Adenoviruses commonly cause respiratory illness, from cold-like symptoms and pharyngitis, inflammation of the throat, to bronchitis or pneumonia.⁠[1, 2]<\/sup><\/p>\n

Milder<\/span>More severe<\/span><\/div>
<\/div>

Cold-like symptoms<\/p><\/div>

Pharyngitis<\/p>

inflammation of the throat<\/p><\/div>

Bronchitis or pneumonia<\/p><\/div><\/div><\/div>\n

Most infections are mild, but people with weakened immune systems or underlying cardiac or respiratory disease have a higher risk of severe illness. This article focuses on respiratory relevance to ENT care.⁠[1, 2]<\/sup><\/p>\n<\/span>

How does it spread?<\/h2>\n

Adenovirus can spread through respiratory secretions and droplets, close contact, or contact with contaminated hands and objects. In an ENT consultation, these routes are relevant to close examination, handling equipment and contact with the patient\u2019s mucous membranes.⁠[2]<\/sup><\/p>\n

A possible route of cross contamination<\/p>

<\/span>

Secretions<\/p>

Respiratory secretions from the patient<\/p><\/div>→<\/span>

<\/span>

A hand or instrument<\/p>

Secretions reach a hand or an instrument<\/p><\/div>→<\/span>

<\/span>

Another contact<\/p>

Relevant moments in an ENT consultation:<\/p>

Close examination<\/span>Handling equipment<\/span>Mucous membrane contact<\/span><\/div><\/div><\/div><\/div>\n

Good to know<\/p>

Contamination is not the same as infection<\/h3>