<prompt> Measles is infectious during -After 4 days of rash4 days before and 5 days after rashThroughout diseaseOnly in incubation period  <response>: Period of communicability: Chickenpox: 1 - 2 days before to 4 - 5 days after the appearance of the rashMeasles: 4 days before to 5 days after the appearance of the rashRubella: 7 days before symptoms to 7 days after the appearance of the rashMumps: 4 - 6 days before symptoms to 7 days thereafterInfluenza: 1 - 2 days before to 1 - 2 days after onset of symptomsDiphtheria: 14 - 28 days from disease onsetPertussis: 7 days after exposure to 3 weeks after the paroxysmal stagePoliomyelitis: 7 - 10 days before and after the onset of symptomsHepatitis A: 2 weeks before to 1 week after onset of jaundiceHepatitis B: Till disappearance of HBs Ag appearance of anti-HBsMeningococcal: Until absent from nasal and throat dischargeTuberculosis: As long as not treated 