慢性或持續性的單核白血球增多症是近幾年在感染症學領域中爲學者所重視且爭議頗多的課題。這種慢性感染症是由EB病毒所引起,造成慢性倦怠,注意力下降,甚致於免疫力減低。我們曾遭遇五十三天大的男嬰以便秘及多核中性球缺乏來求診,在一系列檢查後發現爲巨細胞病毒感染,血液抹片中可見單核白血球增多症的表現,但是其EB病毒檢查爲陰性。在將近三年的追蹤之中,巨細胞病毒的CF抗體逐漸上升,且單核白血球增多症的血液相也持續至二十五個月。在兩歲時的骨髓細胞培著中可見到有藥[46XY,dellp(36.1)]的染色體變化。免疫學檢查見到IgG較低且CD4與CD4/CD4下降。該童的生長發育及智慧在三威時均在正常範圍內。
Chronic mononucleosis has recently gained much attention in the literature. Almost all cases of this new syndrome have been ascribed to persistent Epstein-Barr virus infection. However, a case presented with infantile chronic mononucleosis syndrome caused by persistent cytomegalovirus infection. Transient clonal chromosomal change was noted during follow-up.