How vaccines work?
Germs are all around us, both in our environment and in our bodies. When a person is susceptible and they encounter a harmful organism, it can lead to disease and death.
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Germs are all around us, both in our environment and in our bodies. When a person is susceptible and they encounter a harmful organism, it can lead to disease and death.
As of 22 May 2022, almost one billion people in lower-income countries remain unvaccinated. Only 57 countries have vaccinated 70% of their population – almost all of them high-income countries.
In order to assist programme managers develop optimal immunization schedules WHO has compiled key information on its current routine immunization recommendations into three summary tables.
Today several vaccines are available. Some are under development.