The validity period of &;valid ceificate of yellow fever vaccination&; is -

<p> international ceificate for vaccination:- India and most other cute require a valid ceificate of vaccination against yellow fever from travellers coming from infected areas. A few countries like india require thus even when the traveller has been in transit. It rests with the each country to decide whether a ceificate of vaccination is needed for infants under 1 year. The validity of ceificate begins 10 days after the date of vaccination and extends upto 10 years. Revaccination performed before the end of validity renders the ceificate valid for another 10 years staing on the day of revaccination. For the purpose of international travel , the vaccination must be given at an officially designated centre and the ceificate must be validated with the official stamp of ministry of health. The ceificate valid only if it conforms with the model prescribed under the international health regulations. {Reference: park&;s textbook of preventive and social medicine, 23rd edition, pg no.284}</p