i found the mutation one hard. i talked about how the T memory cells couldnt recognise due to its mutating, then talked about how scientists were continually developing new antibiotics to overcome this problem, and how the mutation would not be affected by this and that new and stronger antibiotics would need to be produced, until one day there will be an epedemic due to the lack of new and stronger antibiots. then concluded by saying how we should focus on prevention rather than treatment. now im not to sure about the last part of my answer.