Complex sentence: On the 18th August there were 4 cases of swine flu in the School community, of which all 4 have made a full recovery, there was also one suspected case which has now be confirmed negative.
Split into simpler sentences: On the 18th August there were 4 cases of swine flu in the school community, of which all 4 have made a full recovery. There was also one suspected case which has now been confirmed negative.