You would need a comma before "specifically" only if it was strongly connected to what comes after it, or if it provides additional information about something that you have mentioned before "specifically". e.g.: - We have discovered a new spieces of insects, a specifically big one.
Where do you put specifically in a sentence?
(1) We haven't specifically targeted school children. (2) The bottle was specifically labeled "poison.". (3) The book was written specifically for children. (4) I specifically asked you not to do that!
How do you use the word specifically?
You use specifically to emphasize that something is given special attention and considered separately from other things of the same kind. ...the first nursing home designed specifically for people with AIDS. We haven't specifically targeted school children.