THE PROJECT PROPOSAL IS THEREFORE COMPOSED OF THE FOLLOWING TWO ACTIONS: 1. STUDY OF EXPOSURE TO COVID-19 INFECTION IN THE HIGH-RISK POPULATION OR IN DIRECT CONTACT WITH POSITIVE PATIENTS. 2. DIAGNOSTIC AND MOLECULAR EXPERIMENTAL ANALYSIS ACTIVITIES ON SARS-COV-2 POSITIVE SAMPLES AND ALIQUOT PREPARATION FOR OTHER RESEARCH GROUPS (FOR THE DEVELOPMENT OF EFFECTIVE AND INNOVATIVE DIAGNOSTIC TESTS, IN VITRO DRUG TRIALS, GENETIC TESTS, PROTEOMIC INSIGHTS, METABOLOMICS, IMMUNE INTERACTION, VIRAL RNA SEQUENCING). IT IS CONSIDERED, IN FACT, OF FUNDAMENTAL IMPORTANCE TO IMPLEMENT HEALTH SURVEILLANCE PROCEDURES ON SUBJECTS WITH HIGH RISK (E.G. IN THE CASE OF COHABITATION WITH A POSITIVE AND SYMPTOMATIC SUBJECT), SINCE THE MANAGEMENT OF THE EMERGENCY HAS NOT, SO FAR, ALLOWED THE ASLS TO CARRY OUT EFFECTIVE LARGE-SCALE EPIDEMIOLOGICAL INVESTIGATIONS IN ORDER TO RECONSTRUCT THE CHAIN OF CONTACTS RECEIVED BY THOSE IN WHICH Ê WAS R.