Health Professionals

Information for Healthcare Professionals

Scientific, medical and health information should be supported by statement of sources or bibliography. It is mandatory to indicate the date when a page was last reviewed or updated. At a minimum, the year when the website was last reviewed or updated is mentioned in the homepage footer.

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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COVID-19 vaccine

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.

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Vaccination schedule

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.

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Vaccine preventable diseases

Today several vaccines are available. Some are under development.

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Are vaccines safe?

Vaccination is one of the best ways to prevent diseases. In total, vaccines are estimated to save between 2 and 3 million lives every year.

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Vaccines and pregnancy

Some vaccines are safe and recommended for women planning a pregnancy or currently pregnant to help keep them and their babies healthy.

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