Table 2.

The clinical significance of IgM/IgG serological test results. (”+” means “Positive”, “-” means “Negative”).

Test Results			Clinical Significance
IgG	IgM	RT-qPCR
+	-	-	Patient may have had a past infection, and has recovered
+	-	+	Patient may be in the late or recurrent stage of infection
+	+	-	Patient may be in the revovery stage of an infection, or the RT-qPCR result may be false-negative
+	+	+	Patient is in active phase of infection
-	-	+	Patient may be in the window period of infection
-	+	-	Patient may be in the early stage of infection. RT-qPCR result may be false-negative
-	+	+	Patient may be in the early stage of infection.
-	-	-	Healthy person