Skip to main content
English
Français
Portuguese
Toggle navigation
Search website...
Search
Search
English
Français
Portuguese
Main navigation
Home
Health topics
All topics »
A
B
C
D
E
F
G
H
I
J
L
M
N
O
P
R
S
T
U
V
W
Y
Z
Popular
Coronavirus (COVID-19)
Communicable Diseases
Ebola Disease
HIV/AIDS
Substance Abuse
Malaria
Water
Traditional Medicine
World Tuberculosis Day 2019
Countries
All Countries »
A
B
C
D
E
G
K
L
M
N
R
S
T
U
Z
News from countries
Sierra Leone Introduces Malaria Vaccine
25 April 2024
Major step in malaria prevention as three West African countries roll out vaccine
25 April 2024
Ghana intensifies efforts towards malaria elimination
25 April 2024
Major step in malaria prevention as three West African countries roll out vaccine
25 April 2024
Over 5 million girls in Tanzania to receive HPV vaccine to combat cervical cancer
23 April 2024
Comunicado de Imprensa
Newsroom
Newsroom
All news
Feature Stories
News Releases
Photo Stories
Statements and commentaries
Notes for Media
Headlines
Sierra Leone Introduces Malaria Vaccine
25 April 2024
Ghana intensifies efforts towards malaria elimination
25 April 2024
Pioneering charter to drive up investment in Africa’s health workforce
25 April 2024
Major step in malaria prevention as three West African countries roll out vaccine
25 April 2024
Spotlight
L'Afrique australe fait face à une augmentation des cas de COVID-19
Data and evidence
About us
About WHO in the African region »
About Us
Contact us
Governance
Leadership
Innovation
Organizational structure
Programmes and clusters
Regional Director for Africa
Accountability »
Financial reports
General Programme of Work
The Transformation Agenda »
Main navigation
Home
Health topics
All topics »
A
B
C
D
E
F
G
H
I
J
L
M
N
O
P
R
S
T
U
V
W
Y
Z
Popular
Coronavirus (COVID-19)
Communicable Diseases
Ebola Disease
HIV/AIDS
Substance Abuse
Malaria
Water
Traditional Medicine
World Tuberculosis Day 2019
Countries
All Countries »
A
B
C
D
E
G
K
L
M
N
R
S
T
U
Z
News from countries
Sierra Leone Introduces Malaria Vaccine
25 April 2024
Major step in malaria prevention as three West African countries roll out vaccine
25 April 2024
Ghana intensifies efforts towards malaria elimination
25 April 2024
Major step in malaria prevention as three West African countries roll out vaccine
25 April 2024
Over 5 million girls in Tanzania to receive HPV vaccine to combat cervical cancer
23 April 2024
Comunicado de Imprensa
Newsroom
Newsroom
All news
Feature Stories
News Releases
Photo Stories
Statements and commentaries
Notes for Media
Headlines
Sierra Leone Introduces Malaria Vaccine
25 April 2024
Ghana intensifies efforts towards malaria elimination
25 April 2024
Pioneering charter to drive up investment in Africa’s health workforce
25 April 2024
Major step in malaria prevention as three West African countries roll out vaccine
25 April 2024
Spotlight
L'Afrique australe fait face à une augmentation des cas de COVID-19
Data and evidence
About us
About WHO in the African region »
About Us
Contact us
Governance
Leadership
Innovation
Organizational structure
Programmes and clusters
Regional Director for Africa
Accountability »
Financial reports
General Programme of Work
The Transformation Agenda »
WHO Africa
How Vaccines work.
How Vaccines work.
As we prepare for COVID-19 vaccination rollout, here is an explanation of how vaccines work.