Opportunistic infections are infections that occur more frequently and are more severe in people with weakened immune systems, including people with HIV.
I believe during the s phase
It's like editing over what's already written. it's the process of reading something and marking for any error. (: Usually deemed more helpful when you let two completely different people proof read the same paper to get a better result!
Good luck, rockstar! (: I wish you the best and hope you pass!