A. 麻疹病毒屬於副黏液病毒科(Paramyxovirida) Measles is caused by a non-segmented, single-strand, negative-sense RNA virus of the genus Morbillivirus and the family Paramyxoviridae.
B. 德國麻疹病毒屬於套膜病毒科(Togaviridae) Rubella is a contagious infectious disease caused by a single-strand, enveloped RNA virus in the family Togaviridae and the genus Rubivirus.
C. 第五病是由細小病毒B19引起的 Erythema infectiosum (fifth disease): The main manifestation of symptomatic B19V disease, erythema infectiosum presents as a low-grade fever ∼7–10 days after exposure and a facial “slapped-cheek” rash (more common among children) a few days later.
D. 第六病是由人類皰疹6型病毒引起的 HHV-6 causes exanthem subitum (roseola infantum, a common childhood febrile illness with rash) and 10–20% of febrile seizures without rash in infancy.
E. 登革熱病毒屬於黃病毒屬(flaviviruses) The most clinically important flaviviruses that cause the fever and myalgia syndrome are dengue viruses 1–4.