Patients with suspected dengue history or those needing confirmation of past exposure should be tested.

A positive result indicates past dengue infection or secondary exposure, requiring clinical correlation.

A negative result suggests no prior dengue infection, though very recent cases may not be detected.

Without testing, past dengue exposure may go unnoticed, complicating diagnosis of secondary infections.

Positive results indicate past dengue infection, which may increase risk of severe secondary dengue.

IgM detects recent infection, while IgG indicates past exposure or secondary infection.

Not exactly. A positive IgG indicates past infection, but it doesn’t guarantee lifelong immunity. Secondary infections can still occur and may be more severe.

Yes, some people may develop IgG antibodies after asymptomatic dengue infection, meaning they were exposed but didn’t experience noticeable illness.

High IgG levels alone don’t indicate severity. Clinical symptoms and other tests are needed to assess disease progression and risk.