When antibiotics become necessary I assume that the body can not kill the bacteria on its own and there are no useful anti bodies being built.
So in a case where the child is treated with antibiotics and the parents are sick too, isn't it necessary to treat the parents with antibiotics exactly at the same time?
Since the body can't cope with the illness without help, it won't develop immunity and could get infected by the same thing at any time after treatment.
So if only the child is treated, but not the parents chances are the parents are going to infect the child again after antibiotics treatment.
So the whole family needs to be treated exactly at the same time?