This document prepared for the French Habilitation to manage PhD is presented in two parts. The first part describes the results obtained in virology and paraitology field, the main research developed over 15 years during which this activity is carried out either in Animal Health Laboratory and INRA. If the key of my missions was initially a research practice, I gradually move to initiate and facilitate strategic research plan and then I initiated a join research unit between AFSSA, ENVA and INRA. The second part resume in a synthetic way the scientific production. The first paragraph refers to publications ordered in the second part according to conventional rules (Publications International (Pn), technical publications (national broadcast), participation in conferences (Cn) ....) As Chief Inspector of Veterinary Public Health (formerly Veterinary Inspector), I provided a number of tasks of administrative nature. First, I was lecturer for the committee for veterinary vaccines and serums, I gradually involved in expert missions seeking to potentiate my research axes in parallel with scientific research missions. I also belonged to commissions apparently very different, but all have in common expertise of biotechnology products.