When Unicef began a campaign to vaccinate the world's children in the early 1980's, many scoffed.
In addition to making a sweeping effort to vaccinate the world's children, it has backed charities like Cancer Lifeline, which provides support to people with cancer and their families, and the American Cancer Society.
"I want to see all the children in the world vaccinated against pneumococcal disease, but I want the appropriate vaccine, scheduled appropriately and if there are problems with the effectiveness of the vaccines, we take measures to correct that.
Nigeria is fighting an unusual outbreak of polio caused by mutating polio vaccine, world health authorities say, but the only remedy is to keep vaccinating children there.
You vaccinated the whole world," he says.
World Immunization Week, with its call to "Protect your world, get vaccinated" is an opportunity to raise global awareness of the health benefits of vaccination.
World Immunization Week starts 20 April with its call to "Protect your world, get vaccinated" with a range of activities in some 180 countries to help immunize more children against preventable diseases.
Mr. Bush ordered on Friday that about 500,000 troops in "high-risk parts of the world" be vaccinated.
We will also have vaccinated more of the world's poorest children than there are people in the whole of England.
Islamic countries elsewhere in the world have vaccinated against polio, including Nigeria's neighbor Niger, a largely Muslim country, which led a vigorous vaccination program last week, Dr. Heymann said.
