Baby is having high grade every month, all hs 3 dtp vaccination is done, it started after he completed 3 months, he is having fever every month, he is 5 month old , and the fever reaches to 103-104 every time, then after a course of antibiotics each month he will get fine, can anyone please explain, is recurrent high grade fever common in infants or is it worrisome, every time I ask doctor he says it’s viral infection after his 3rd month, this is third time he is having fever.and all these fever starts with normal cold.