hi sir,my daughter is 4 yrs old and we have been to india last year for christmas and came back on january 13th 2011,right from then my child started spiking a fever. it happens about every three weeks to 1 month. she will be fine in the day, playing, going to school, the only thing is she says her belly is sore but doesn t complain too much. then when it comes to about 5pm she deteriorates very quickly. becomes very lethargic, sleeping, crying but not knowing whats wrong, shivering. her temperature goes up. this usually only lasts that one night and by the next day she s almost as normal...for another few weeks.