My son(13 years) was having fever for past seven.7 days, when we were traveling to Bihar,India. When we returned to Bhopal,we consulted the Doctor. The malaria and Typhoid tests were conducted. Maleria was negative where as Typhoid got positive. Doctor prescribed the antibiotic PECEF Duo-200, Pacimol,Polybion and one more medicine. Four days have gone,the condition is not improving. Every 7-8 hours he starts shivering heavily,temp. goes up to 102. And after paracetamol,it goes down-again reappear.What should I do now? Consult another doctor, or wait for a while? Or go for some other test?