During a crisis situation, communication by public authorities is inescapable and essential for an effective and efficient response to a situation that may endanger and jeopardize at the time life and property. Communication participates largely in the management of any crisis such as the coronavirus pandemic. Since its outbreak in Wuham (China), it has quickly spread nearly all over the world. Since its appearance on 2nd March 2020 on Senegalese territory, the entire nation has been immersed in resolving this health crisis pandemic. All useful means such as communication are highlighted to cut the chain of contagion of the virus. In this communication against the coronavirus pandemic, we noted the presence of concepts, slogans and / or "sloganized" expressions whose understanding of their communicative values requires an operation of interpretation and decoding. The perception of the informative content of such speech acts is based on their context of use by the users. This article tries, from an interpretative analysis, to highlight some speech acts and discursive strategies created and used in the management of the pandemic, then to identify their new particularities, and to decipher their preventive content implicit in the communication of the fight against coronavirus.