Eligible patients will be randomised to receive Paracetamol prn for fever at maximum dosage of 500 mg PO q 4 hr (3 gm/day)

Eligible patients will be randomised to receive Placebo prn for fever at maximum dosage of 500 mg PO q 4 hr (3 gm/day)

Paracetamol 500 mg x 1 tablets according to patient's body weight

Serum alanine transaminase and aspartate transaminase level will be measured at admission, and on every morning afterwards until the subject is discharged. The proportion of subjects with abnormal serum transaminase levels will be compared.

Mean serum transaminase level will be compared.

The change in serum transaminase levels from baseline at admission will be compared.

Axillary temperature will be recorded every 4 hours until discharge or 8 days after admission, whichever comes first.

Duration from the fever onset to the last febrile temperature will be compared.