NexBiolinea participated in the 11th International Conference on Legionella, held at the University of Zurich from 7 to 11 September 2026, which this year marked the 50th anniversary of the discovery of the bacterium.

The company presented research with an innovative approach to understanding why some buildings repeatedly harbour Legionella while others remain almost entirely free of it, further strengthening NexBiolinea’s presence in major international forums for knowledge and research on Legionella prevention and control.

More than 43,000 water samples and 404 buildings analysed

The team analysed more than 43,000 water samples collected between 2020 and 2025 across 404 buildings, mainly hotels and healthcare facilities, as part of routine Legionella monitoring in water.

The novelty of the study lies not in a single result, but in its long-term perspective. Instead of interpreting each Legionella sampling event in isolation — or analysing the results of a single year — the researchers studied how each building behaved year after year over a six-year period.

The “personality” of buildings in relation to Legionella

The results reveal a particularly interesting phenomenon: many buildings tend to behave in a stable and repeatable way in relation to Legionella.

Some remain almost consistently negative or show a very low proportion of positive samples. Others, by contrast, repeatedly show Legionella in a high proportion of samples.

In other words, each building appears to have its own persistent profile in relation to Legionella — a kind of “personality” that remains consistent over time.

The research also explores the water microbiome, the community of microorganisms living within water systems. The team observed that buildings at opposite ends of these profiles harbour clearly different microbial communities.

This finding suggests that the microbial ecosystem of the water itself may influence whether Legionella encounters conditions that are more or less favourable for its growth.

Towards more personalised Legionella prevention

These findings open the door to Legionella monitoring and prevention strategies that are better adapted to the specific risk profile of each building, allowing resources and preventive measures to be focused on facilities that show a greater tendency to produce recurrent positive results.

As Sebastián Crespí, President and Scientific Director of NexBiolinea and leader of the study, explains:

“Until now, each sampling was interpreted on its own. Looking at six years of data, we found that buildings have a distinct, recognisable behaviour towards Legionella, and that their microbiome tracks that behaviour. This can help us monitor and prevent more intelligently.”

Research developed by the NexBiolinea team

The research was led by Sebastián Crespí, President and Scientific Director of NexBiolinea, with the participation of Magdalena Bennasar, Saomé Sancho, Jhon Molina, Javier Sánchez, Jorge del Barrio, Andrés Bedoya, Mónica Terrasa and Beatriz Santandreu.

The study is the result of combining technical expertise, laboratory activity and six years of accumulated data analysis, transforming information generated through routine Legionella monitoring into scientific knowledge that can contribute to a better understanding of the bacterium’s behaviour within water systems.

This ability to connect laboratory science, data and real-world field experience with applied scientific research is one of the pillars of NexBiolinea’s approach: not only detecting and controlling risks, but also studying and understanding them in order to move towards increasingly effective, evidence-based prevention strategies.

NexBiolinea at the forefront of international scientific discussion on Legionella

Presenting this research at the 11th International Conference on Legionella provided an opportunity to share NexBiolinea’s findings with international researchers and specialists and to contribute to advancing knowledge on Legionella prevention and control.

Participation in this international forum reinforces NexBiolinea’s commitment to research, innovation and scientific knowledge applied to water safety, particularly in sectors such as hospitality and healthcare, where effective Legionella risk management is essential.

The study is observational and exploratory. The full research is available on ResearchGate under DOI 10.13140/RG.2.2.25014.66886.

At NexBiolinea, we are pleased to announce the renewal of our ISO 9001:2015 certification in Quality Management Systems across all our delegations, both national and international.

This certification confirms once again that our processes, in each of the countries where we operate, meet the most demanding international standard in quality management.

The same standard of quality in every delegation

For over a decade, quality has been the backbone of everything we do. That is why reaching Edition 12 of a certificate held without interruption since 7 February 2013 is a source of deep pride: thirteen years guaranteeing, audit after audit, that our work is carried out with the utmost rigor.

The true value of this renewal lies in its genuinely international scope. A client in Palma de Mallorca, Las Palmas de Gran Canaria, Cancún or Punta Cana receives exactly the same standard of quality, supported by the same processes, independently audited and verified. The same demand, the same rigor and the same reliability, regardless of distance.

The certified scope covers:

• Environmental and agri-food laboratory for food, water, surfaces and air quality.
• Consultancy and training in public health and safety, sustainability and the environment.
• Validation and qualification of controlled-environment rooms.
• Indoor Air Quality (IAQ) studies.
• Sale of related equipment.
• Delivery of specialized training.

The real driving force: our teams

Behind every certificate there is a human team that makes it possible. And on this occasion, we want to give special recognition to the outstanding work carried out by our international and Canary Islands delegations, which keep their laboratories and consultancy services at the highest level required by the standard:

Mexico — Cancún (Quintana Roo)
Our team maintains the certification of its environmental and agri-food laboratory for food, water and surfaces, as well as its consultancy and training services in public health and safety, sustainability and the environment. A testament to the fact that excellence knows no distance.

Dominican Republic — Punta Cana (Altagracia Province)
Our team likewise revalidates the certification of its environmental and agri-food laboratory, together with its consultancy and training services, placing our Caribbean delegation on a par with the most rigorous international standards.

Canary Islands — Las Palmas de Gran Canaria
Our Canary Islands delegation consolidates the certification of its environmental and agri-food laboratory for food, water and surfaces, reinforcing our presence and our commitment to quality in the archipelago.

To all of them, and to the teams at our headquarters in Palma de Mallorca, we extend our most sincere recognition. This achievement is, above all, yours.

HOTECMA, our school, also renews

This commitment to quality also extends to HOTECMA, our training school, which —together with ASIMA and the FEHM— renews its certification once again, ensuring that our training activity in public health and safety, sustainability and the environment is delivered under the same standards of excellence that govern the rest of our services.

Training is a key part of our purpose: to transfer rigorous, up-to-date knowledge to the sector. The fact that our school maintains this certification is the best guarantee that those who train with us do so within a solid and recognized quality system.

A commitment looking to the future

ISO 9001:2015 certification is not a destination, but a way of understanding our work: continuous improvement as a non-negotiable principle. Its validity, subject to periodic surveillance audits, requires us —and motivates us— to maintain every day the level of demand our clients deserve.

We will continue investing in processes, in people and in knowledge to ensure that every analysis, every consultancy report and every training action is carried out with the utmost reliability and technical rigor.

Because for us, quality is not a department. It is our way of being.

Beyond commemorating 25 years of our company’s journey, this event paid tribute to the professional path of those who have led this project for over two decades, including Beatriz Santandreu, Jorge del Barrio, Andrés Bedoya, Marga Cifre, Ana Mª García, Ana Flavia, and Magdalena Bennassar. A heartfelt tribute was also given to Dr. Sebastián Crespí, founder of NEXBIOLINEA, for his more than 40 years of professional dedication.

Brand Unification: The New NEXBIOLINEA Is Born

A key milestone was presented during the event: the unification of all our brands under one single commercial identity, NEXBIOLINEA. This change symbolizes our commitment to consolidating our value proposition, simplifying our presence in the market, and strengthening our connection with all stakeholders through a single voice and vision.

Words from Pau Crespí, CEO of NEXBIOLINEA

“Celebrating 25 years is something to be proud of, but even more important is looking toward the future with ambition. We have witnessed constant transformation, and today we begin a new phase with the opening of new laboratories in Mexico, the Dominican Republic, and the Canary Islands. These projects reinforce our international commitment and our drive to continue leading through scientific excellence, without ever losing sight of people and clients.”

Words from Dr. Sebastián Crespí, President and Scientific Director

“NEXBIOLINEA has grown with strong and clear values: Integrity, Scientific Rigor, Passion, and Customer Orientation. These principles have guided every decision, every project, and every relationship built over the past 25 years. What we celebrate today is also the trust our clients and partners have placed in us, and our ongoing commitment to respond with the same dedication and professionalism that brought us here.”

Thank You, NEXBIOLINEA Team

We extend our deepest gratitude to the entire NEXBIOLINEA team — the true engine behind this journey. Your professionalism, dedication, and commitment have been essential in reaching this milestone. This anniversary not only honors our past, but also sets a clear intention for the path we wish to walk together in the years to come.