If you don’t want other people to re-share (repost) your content or updates, you can disable sharing for all of your posts or individual posts.
You do this when you create the update by selecting “Disable re-share” from the drop down menu.
You can also choose to edit or delete any post or update you’ve created, as well as disable comments in the event you would like to prevent others from posting follow-ups or feedback about your updates.
Since Google+ is a social network, I don’t recommend disabling comments on any of your posts as it’s important to interact and engage with those that have chosen to add you to their circles.
By enabling comments, you can create an open dialogue and further build your brand, and following.