Russian-English translations for заразный

• contagious
  The flu was so contagious that everybody in town got sick!
  Wearing jeans was a contagious fad at that time
  They were highly contagious, spreading bacteria to other people
• infectious
  Cancer is not infectious.
  More infectious diseases like the flu are usually less potent.
  Despite feeling better, the patient is still infectious.
• pestiferous
• virulent
  The politicians were virulent in their hatred of the president