The laboratory for molecular analyses of influenza viruses cooperates closely with the WOAH and national reference laboratory for fowl plague and the laboratory for animal studies. Using a multitude of RT-PCR tests as well as sequencing, avian and porcine influenza viruses are detected, subtyped and characterized molecularly. Depending on the question to be answered, either the surface proteins haemagglutinin and neuraminidase or the complete genome are investigated. The generated data are used as basis for analyses on the molecular epidemiology of influenza A viruses n Germany and Europe. The laboratory was accredited in 2003.