病毒引起的

• " infections caused by pivs are common , especillay in infant and small children
  他说：由副流感病毒引起的感染颇为常见，特别是幼童较易感染。
• Bird flu is an infection caused by avian bird influenza viruses
  禽流感是一种由禽流感病毒引起的传染病。这些流感病毒是在禽鸟当中自然产生的。
• Dengue fever is an acute mosquito - borne infection caused by the dengue viruses
  登革热是一种由登革热病毒引起的急性传染病，此病毒经由蚊子传播给人类。
• The viral sickness is one of the world ' s most destructive diseases of livestock ( life stock )
  这种由病毒引起的疾病是世界上对家畜最有破坏性的疾病之一。
• The viral sickness is one of the world most structive ( destructive ) diseases of last * ( livestock )
  这种病毒引起的疾病是全世界的家畜里最具破坏性的疾病。
• It ' s caused by virus . it will take 10 to 15 days to subside . don ' t wory , everything will be ok
  这种病是病毒引起的。 10到15天就会好。别着急。一切都会好起来的。
• Sars is a new disease . the prevention of which relies on good personal hygiene
  严重急性呼吸系统综合症是由一种新病毒引起的，要预防这种病症，良好的个人生非常重要。
• Epidemiological investigation and analysis on the outbreaks of the diseases induced by influenza b virus
  由维多利亚系乙型流感病毒引起的流感暴发疫情流行病学调查分析
• Three types of influenza viruses are recognized : a , b and c . infection caused by influenza a viruses is more common
  流感病毒共分甲乙丙型三种，由甲型流感病毒引起的感染较为常见。
• Sars is a new disease . the prevention of which relies on good personal hygiene . never spit in public
  严重急性呼吸系统综合症是由一种新病毒引起的，要预防这种病症，良好的个人?生非常重要。