Laboratory results are summarized in Table 1 . The patient was not anemic, but was thrombocytopenic and had an eosinophilia. He was also hyponatraemic and had elevated blood urea, potassium, lactate dehydrogenase and amino transferase values. Serum creatinine was not available. A blood sample taken 24 hours post-mortem showed >10% of erythrocytes infected with predominantly pigmented parasites ( Figure 1a ). Heavily pigmented monocytes were also present ( Figure 1b ). Plasmodium knowlesi, as a single species infection, was confirmed by nested-PCR [9] . Post-mortem dengue serology was negative (Table 1 ) and dengue, respiratory syncytial virus and enterovirus were not isolated in organ samples.