LISBON, Portugal —
A World Health Organization doctor said the number of polio viruses is at its lowest level in history, but there are still major challenges to ending the disease.
Rotarians have joined with a global vaccination initiative to raise $5.5 billion to eradicate the disease by 2018. More than $4 billion was pledged earlier this year at the Global Vaccine Summit in April. The Bill & Melinda Gates Foundation pledged to match Rotarian gifts 2 for 1 up to $35 million a year for the next five years.