Yellow fever vaccine
Also Known As: Yellow fever vaccine, Yf-vax
The vaccine consists of a live, but attenuated, strain of the yellow fever virus called 17D. The 17D vaccine has been used commercially since the 1950s. The mechanisms of attenuation and immunogenicity for the 17D strain are not known. However, this vaccine is very safe, with few adverse reactions having been reported and millions of doses administered, and highly effective with over 90% of vaccinees developing a measurable immune response after the first dose. Yellow fever vaccination certificate is issued for 10 years but becomes valid only after 10 days of vaccination.