The World Health Organization (WHO) has announced that individuals no longer need to take booster vaccination dosage that used to be recommended to be taken ten years after the initial vaccination. This was revealed by the WHO in its Weekly Epidemiological Record (WER).
In the report, it said its Strategic Advisory Group of Experts on immunization (SAGE) conducted a review of the latest available scientific evidence that made it conclude that a single dose of vaccination is sufficient to confer life-long immunity against yellow fever on the recipient.
WHO stated: "Since yellow fever vaccination began in the 1930s, only 12 known cases of yellow fever post-vaccination have been identified, after 600 million doses have been dispensed.
"Evidence showed that among this small number of “vaccine failures”, all cases developed the disease within five years of vaccination. This demonstrates that immunity does not decrease with time."
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