Vaccine Effectiveness, Burden and Impact Studies (VEBIS) of COVID-19 and Influenza – Tender Specifications – Lot 2 OJ/2021/DPR/12924  Principal/Senior Expert  A level of education which corresponds to completed university studies of at least five years attested by a diploma in a  relevant field (eg. post-graduate or medical degree in epidemiology, microbiology, public health, medicine, veterinary  medicine, biology or equivalent); At least 8 years professional experience (following the award of the diploma) 