Good news - one small Italian town, Vo Euganeo, has completely stopped its outbreak by rigorously testing everyone in the community including those who were asymptomatic. To do that they disregarded a directive from their government to only test those who had symptoms.
Even China didn’t do that, or Singapore. They only tested those with fever or respiratory disease symptoms.
Vo Euganeo is in Veneto which has had consistently lower case numbers than the other provinces and has had the most rigorous approach to case finding.