Diseases – Isolation Period
Chicken pox – 1-2 days before to 4-5 days after appearance of rash
Diphtheria – 14-28 days from disease onset
Hepatitis A – 2 weeks before to 1 week after onset of jaundice
Hepatitis B – Till disappearance of HBsAg and appearance of anti-HBs
Influenza – 1-2 days before to 1-2 days after appearance of rash
Measles – 4 days before to 5 days after appearance of rash
Meningococcus – Until absent of throat and nasal discharges
Mumps – 2-4 days before to 7 days after appearance of rash
Pertussis – 7 days after exposure to 3 weeks after paroxysmal stage
Poliomyelitis – 7-10 days before and after onset of symptoms
