In the cold season, healthcare facilities, care homes and schools face waves of respiratory and gastrointestinal infections. For surface disinfection, the question is not only “is the product virucidal?”, but “which viruses was it tested against?”. The answer depends on the structure of the virus.
In short
- Enveloped viruses (influenza, coronavirus, RSV, hepatitis B and C viruses, HIV, herpes) have a fragile lipid envelope: they are the easiest to destroy.
- Non-enveloped viruses (norovirus, adenovirus, rotavirus, poliovirus) are much more resistant and require a virucidal spectrum demonstrated against them.
- Check the authorisation for the viruses tested, the standard (EN 14476, EN 16777), the concentration and the contact time.
Why the viral envelope matters
Enveloped viruses are surrounded by a lipid membrane that is easily destroyed by alcohols, quaternary ammonium compounds or chlorine. Non-enveloped viruses only have a protein capsid, which is much more resistant: they survive longer on surfaces and require more demanding active substances, concentrations or contact times.
| Type | Examples | Resistance to disinfectants |
|---|---|---|
| Enveloped | Influenza viruses, coronaviruses (including SARS-CoV-2), respiratory syncytial virus, hepatitis B, C and D viruses, HIV, herpesviruses | Low |
| Non-enveloped | Norovirus, rotavirus, adenovirus, poliovirus and other enteroviruses, hepatitis A virus | High |
What EN 14476 and EN 16777 mean
EN 14476 is the suspension test (phase 2, step 1) for virucidal activity in the medical area. EN 16777 tests virucidal activity on non-porous surfaces (phase 2, step 2), closer to real-life conditions.
The claim “virucidal against enveloped viruses” is based on testing against Vaccinia virus, considered representative of all viruses with a lipid envelope. For non-enveloped viruses, the product must be tested against reference viruses such as poliovirus, adenovirus and murine norovirus.
What to choose depending on the situation
| Situation | Required spectrum | Examples from the GM 2000 range (according to the authorisation) |
|---|---|---|
| Flu season, respiratory infections, high-touch surfaces | Virucidal against enveloped viruses, fast action | Hexy Spray: undiluted, 1 minute (EN 16777) Bionet SP Sanidor: undiluted, 5 minutes (EN 16777) |
| Gastroenteritis, norovirus or rotavirus outbreak | Virucidal against non-enveloped viruses | Clorom: 1 tablet / 3 L, 60 minutes (EN 14476: poliovirus, adenovirus, murine norovirus) |
| General disinfection of large surfaces | Virucidal, with an adapted concentration | Bionet A15: 2%, 60 minutes (EN 14476: Vaccinia, adenovirus, poliovirus) |
| Staff hand hygiene | Antiseptic tested against viruses | Hexid: adenovirus in 60 seconds, poliovirus in 90 seconds (EN 14476) |
Outbreak protocol
- Identify the suspected or confirmed agent, together with the physician or the infection prevention service.
- Choose a product whose authorisation covers that type of virus, at the corresponding concentration and contact time.
- Increase the frequency of disinfection of high-touch surfaces: door handles, handrails, buttons, washrooms.
- Clean before disinfecting, especially after vomiting or diarrhoea.
- Carry out terminal disinfection after the patient leaves or at the end of the outbreak.
Frequently asked questions
Can vinegar or baking soda replace a disinfectant?
No. They are not authorised biocidal products and have no efficacy demonstrated to European standards.
Does an alcohol-based hand rub destroy norovirus?
Not all of them. Check the viruses tested in the authorisation; washing hands with soap and water remains recommended when hands are visibly soiled.
What does “dirty conditions” mean in an authorisation?
The test was performed with a higher protein load (3 g/L albumin), simulating surfaces contaminated with body fluids.
GM 2000 products for this application
Virucidal against enveloped viruses in 5 minutes, undiluted; also authorised PT4.
View product sheet →References
- EN 14476 and EN 16777: test methods for virucidal activity.
- Authorisations of the products cited, available on the product sheets.
- Romanian Ministry of Health Order no. 1761/2021 approving the Technical Rules on cleaning, disinfection and sterilisation in public and private healthcare facilities.
Article reviewed by the GM 2000 technical team. Last updated: 22.10.2026. Product information is taken from the authorisations issued by the Romanian Ministry of Health; for other applications, refer to the label and the technical data sheet.
Use biocides safely. Always read the label and product information before use.
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