Instituto Nacional de Saúde Dr. Ricardo Jorge
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 Infecções Gastrentestinais e Zoonoses


The National Reference Laboratory (NRL) of Gastrointestinal Infections  consists of three laboratories:

  • Salmonella spp, Escherichia coli, Shigella spp, Yersinia spp, Listeria monocytogenes and other entérica bacteria;
  • Campylobacter spp and Helicobacter spp;
  • Giardia lamblia, Cryptosporidium spp and Entamoeba histolytica.

This Laboratory has the following functions: to develop new laboratory methodologies, implement reference methods, participate in the standardization of laboratory techniques, to ensure the scientific-technical support to the laboratories of health services, promote, organize and ensure external quality assessment in laboratory as well as to prepare and distribute reference materials.

The strategic action in combating gastrointestinal infections is represented by four main lines, surveillance, prevention, research, national and international cooperation:

  • The laboratory epidemiologic surveillance of infections caused by bacteria or parasites of the gastric and intestinal forum falls under the National Health Plan and is dedicated to the identification, study and strain differentiation using epidemiological markers (classical and molecular) and identification of virulence factors;
  • prevention, which is reflected by the dissemination of results and training;
  • participation in projects aiming at clarify the situation in Portugal;
  • the national and international cooperation is developed through collaborations with different national institutions (DGS, LNIV, universities etc..) and international institutions (ECDC, WHO, and the INSA counterparts National Institutes of Health).


  • Jorge Machado, PhD, Head of the laboratory
  • Mónica Oleastro, PhD, Reseacher
  • Cláudia Júlio, Technical Senior Health, PhD Student
  • Adelaide Marques, Technician
  • João Benoliel, Technician
  • Andrea Santos, Technician
  • Susana Martins, Technician