Presence of three dengue serotypes in Ouagadougou (Burkina Faso): research and public health implications

Table 2 Classification of dengue cases according to WHO 2009 guidelines

Diagnosis according to WHO 2009 classification	Laboratory investigation	N	Proportion (%)
No dengue		234	61.7
Presumptive^a dengue without warning signs	–	36	9.5
Presumptive^a dengue with warning signs	–	68	17.9
Probable dengue without warning signs	IgG positive	7	1.8
Probable dengue without warning signs	IgG and IgM positive	11	2.9
Probable dengue with warning signs	IgG positive	1	0.3
Probable dengue with warning signs	IgG and IgM positive	5	1.3
Confirmed dengue without warning signs	PCR positif	7	1.8
Confirmed dengue without warning signs	AgNS1 and PCR positive	3	0.8
Confirmed dengue with warning signs	AgNS1 positive	2	0.6
	PCR positive	3	0.8
	AgNS1 and PCR positive	2	0.6

^a According to WHO 2009 guidelines, a presumptive diagnosis is part of the assessment of the case and is only clinically based (i.e., based on signs and symptoms)

ISSN: 2049-9957