Table 2.

Combined polymerase chain reaction and serological test results interpretations.

Polymerase chain reaction result	IgG/IgM result	Interpretations
−ve	−ve	1. Infection not present 2. Infection at an early stage
Positive	Negative	1. Illness at first week 2. Infection is active; contagious patient and quarantine needed 3. Immunocompromised patient; repeating antibody test in two to 5 days
Positive	+ve	1. Infection is active; contagious patient and quarantine needed 2. Production of antibodies due to immune response
−ve	+ve	1. Infection recovered 2. Illness at late stage or virus elimination from body