UNICEF is the world's largest distributor of vaccines to the developing world, supplying vaccines for 36% of the world's children.
In emergencies such as conflict or a natural disaster, we deliver vaccination campaigns to help protect vulnerable children from preventable diseases when health services are down.
There's still a lot of work to be done, but today, 4 out of 5 children are being immunised – that's more than ever before. Find out more in this photo gallery, or visit our page on immunisation and vaccines.
This four year old lives in a remote area of Mongolia. She's just been immunised against measles and rubella by a team of vaccinators who travelled by car, hand-drawn ferry, reindeer and foot to reach the children in the area where her family, nomadic reindeer herders, currently live.
© UNICEF/NYHQ2012-1732/BRIAN SOKOL
In Congo, a girl receives a dose of oral polio vaccine in the coastal city of Pointe-Noire, the epicentre of the country’s 2010 polio outbreak.
© UNICEF/NYHQ2010-2765/Olivier Asselin
A baby gets their measles vaccination from a nurse midwife at an immunisation site in western Nepal. It's part of a nationwide measles-rubella immunisation campaign.
© UNICEF/NYHQ2012-1668/SHEHZAD NOORANI
Actor and UNICEF Ambassador Ewan McGregor collects vaccines from a refrigerated room in Congo during his Cold Chain Mission in 2012.
© UNICEF/Congo/2012/Modola
Congo, 2010. A vaccination team member marks a child’s hand with ink, indicating the child has been immunised against polio. Learn more about the global fight against polio
© UNICEF/NYHQ2010-2793/Olivier Asselin
In Bangladesh, 14-month-old Shobuj arrives at the immunisation centre with his mum Aparna. Under-five child survival in Bangladesh improved by over 60% between 1990 and 2011, thanks in part to its immunisation programmes.
© UNICEF/BANA2013-00140/AHSAN KHAN
In Syria, a girl receives a dose of oral polio vaccine at a health centre in Damascus, during the UNICEF-supported polio and measles immunisation campaign in 2012. Find out more about our work for Syrian children.
© UNICEF/NYHQ2012-1628/BASSEL HALABI
Pakistan, 2011. A health worker marks the finger of a toddler with indelible ink to show she's received a dose of polio vaccine, in a camp for people displaced by flooding in Sindh Province.
© UNICEF/NYHQ2011-0187/Asad Zaidi
Côte d'Ivoire, 2011. A health worker administers a measles vaccine to a child in the city of Abidjan.
© UNICEF/NYHQ2011-0650/Olivier Asselin
