Volume 12, Number 8—August 2006
Dispatch
O'nyong-nyong Virus, Chad
Figure 1
![](/eid/images/06-0199-F1.gif)
Figure 1. Immunoglobulin M (IgM) (□) and IgG (▲) titer in serum. For all samples, antibody titers were determined by serial dilution assays. Antibody titer is defined as the reciprocal of the highest dilution of serum that yields a positive serologic reaction.
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