COVID-19(1) outbreak(1) 90C25(1) Italian(1) Spread(1) 90B90(1) approach(1) Italian region(1) diagnostic test(1) Research(1) 90C90(1) the disease(1) COVID-19 outbreak(1) 90C20(1) helping(1) Italy(1) disease detection(1) MONITOR(1) mathematical(1)