The government took a decision at the outset to be "transparent" over Italy's dramatic outbreak of the coronavirus, which has killed at least 14 people and infected over 528 - the second highest number of cases outside China.
"Italy decided to be transparent right from the start. A country's credibility can be measured by its transparency," Di Maio told reporters at the Foreign Press Association in Rome.
Di Maio lauded the work of Italy's health ministry and its minister Roberto Speranza in combatting the coronavirus and informing the public on the oubreak.
"Our credibility derives form the work done in the past weeks by the health ministry and minister Speranza," Di Maio said.