It has been amply demonstrated that _crowd gatherings_ markedly facilitate the spread of the disease. Mass meetings should be prohibited and gatherings in and out of doors should be discouraged. The public should be taught that the safest place is at home. What _instructions_ can we give _to the individual_ for his own protection? There are at least six precautions based on scientific knowledge. They are: First: Avoid crowds. Second: Avoid crowding in the family. Third: Sleep alone. Fourth: Pay particular attention to personal hygiene. Fifth: Boil all dishes, etc., after meals. Sixth: Do not eat in insanitary restaurants. Eat at home. Should cases be _isolated_? Should they be quarantined until no longer infective? The experience of the last epidemic has rendered us pessimistic. We have found that isolation and quarantine does little or no good. Institutions which were held under rigid quarantine for the first months of the epidemic were later invaded when discipline became lax. The disease thereafter spread often as extensively as it would have, had there been no delay. But, on the other hand, there is record of some institutions in which the quarantine lasted throughout the epidemic and in which the inmates never became ill. All of our past experience with infectious diseases leads us to believe that isolation of cases should be enforced. The experience of 1918 should not cause us to change from this point of view. Up until now the procedure has been without results. It has been nearly impossible to enforce it. Further study must be made before any definite conclusion can be reached. The same in general may be said regarding _disinfection_ after recovery of a case of influenza. Today most people believe that disinfection is unnecessary. The work of Lynch and Cumming, if correct, would indicate the contrary. The possibility of transmission through inanimate objects has not as yet been completely eliminated.