You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Measles is infectious during - and explain in detail?
Period of communicability: 


Chickenpox: 1 - 2 days before to 4 - 5 days after the appearance of the rash
Measles: 4 days before to 5 days after the appearance of the rash
Rubella: 7 days before symptoms to 7 days after the appearance of the rash
Mumps: 4 - 6 days before symptoms to 7 days thereafter
Influenza: 1 - 2 days before to 1 - 2 days after onset of symptoms
Diphtheria: 14 - 28 days from disease onset
Pertussis: 7 days after exposure to 3 weeks after the paroxysmal stage
Poliomyelitis: 7 - 10 days before and after the onset of symptoms
Hepatitis A: 2 weeks before to 1 week after onset of jaundice
Hepatitis B: Till disappearance of HBs Ag & appearance of anti-HBs
Meningococcal: Until absent from nasal and throat discharge
Tuberculosis: As long as not treated