For the past 1 year, my son have frequent fever, 18 Mar shot to 39.9C, need a jab to subside the fever and last week wed, again shot up to 40.1C, took the jab again, last one year, think he already got the jab for more that 5 times, all fever near to 40C, we are so worry and bring him to his PD as the fever still not subside yet, the PD give us antibotics and to monitor him and will see him again in 1 wk time, he think mayb my boy have low immune system and need to have blood test if the fever still dun go away... Do any mummy have experience like my boy?? By the way, my son is only 25mth old..