DD has been on trimethiprim for 3 years to stop her picking up infections. Every May we bring her off it to see if her immune system has strengthened to fight off more infections, viruses. She is usually back on it within 4 weeks after sufering illness, however this year she hasnt done to bad since she came off it in May she has had a bowel infection, urine infection and 2 sickness bugs (which havent required hospital admission so not to bad, she gets terrible temperatures) Anyway she is still off it, but now with all this swine flu thing i am considering putting her back on it to give her a bit of protection against it. She starts school in september so am expecting lots of illness then plus i am 13 weeks pregnant. Whats the general concensus would you put your child back on it? She does have a weakened immune system, but unsure what to do