2.第一次感染Epstein-Barr virus 所致之傳染性單核球增多症（Infectious mononucleosis），在急性期血清的 EBV特異性抗體檢查結果，以下何者最為可能？
(A)anti-VCA IgM（-）、anti-VCA IgG（+）、anti-EBNA Ab NEA（+）
(B)anti-VCA IgM（+）、anti-VCA IgG（+）、anti-EBNA Ab NEA（+）
(C)anti-VCA IgM（+）、anti-VCA IgG（+）、anti-EBNA Ab NEA（-）
(D)anti-VCA IgM（-）、anti-VCA IgG（-）、anti-EBNA Ab NEA（+）

1. Antibodies to EBV antigens include antibodies to viral capsid antigen (VCA), early antigens (EAs), and EBNA.

2. Antibody to the restricted component of early antigens (EA/R) is measurable in children younger than 4 years

with primary EBV infection or in patients with nonsymptomatic infection.

3. 80% of the patients with infectious mononucleosis have antibodies to the diffuse-staining component of EA

(EA/D).

4. Patients who are immunocompromised and have persistent or reactivated EBV infections often have high

levels of antibodies to EA/D or EA/R.