<s>[INST] Hi. I am from Zimbabwe Africa. In a small community called Warren Park there has been an outbreak of diarrhea which was suspected to be typhoid especially amongst children. The tests that were done came out negative for typhoid. The symptoms are wounds in the mouth, backache, fever, running stomach. All the parents suspecte it was malaria. [/INST] **1. Typhoid generally occurs in poor hygienic conditions, and may recur frequently if adequate treatment is not delivered during the attack - as the typhoid bacteria become resistant and contribute to overall resistance in the community which it affects, and since reports were negative for the same it could be simple viral fever, or you can go for investigations like blood test for malaria parasite </s>