Circulation of Dengue Virus Serotypes in the City of Makkah, Saudi Arabia, as Determined by Reverse Transcription Polymerase Chain Reaction

Table 2

Dengue virus specific primers and their expected product size.

Serotype	Primer pair	Size of PCR products (bp)
First step: RT-PCR
All serotypes	D1 + D2	511
Second step: serotype detection
DENV-1	D1 + TS1	482
DENV-2	D1 + TS2	119
DENV-3	D1 + TS3	290
DENV-4	D1 + DEN4	392