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The Boston Globe

World

Polio campaign falters in Somalia

NAIROBI, Kenya — Somalia is suffering an ‘‘explosive’’ outbreak of polio and now has more cases than the rest of the world combined, an official said Friday.

Vaccine-wielding health workers face a daunting challenge: accessing areas of Somalia controlled by Al Qaeda-linked militants, where 7 of 10 children aren’t fully immunized.

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Polio is mostly considered eliminated around the world, except mainly in three countries where it is considered endemic: Afghanistan, Nigeria, and Pakistan. India marked a major success in February 2012 by being removed from the World Health Organization’s list of countries plagued by the disease.

Somalia now has 105 cases, figures released Friday show, and another 10 cases have been confirmed across the border in a Kenyan refugee camp filled with Somalis. Globally there have been 181 cases of polio this year.

Vaccination campaigns in Somalia have reached 4 million people since the outbreak began in May, but those health officials have limited access to about 600,000 children who live in areas of Somalia controlled by the armed Islamist group Al Shabab.

Some good news: Oliver Rosenbauer of the Global Polio Eradication Initiative said polio numbers are down in the three endemic countries.

‘‘The only way to get rid of this risk is to eradicate in the endemic countries, and there the news is actually paradoxically very good,’’ he said.

Somalia was removed from the list of endemic polio countries in 2001; this year’s outbreak is the second since then.

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