The Gates Foundation and the GAVI Alliance have spent more than $2.5 billion and promised another $10 billion for vaccines. Efforts by the Rotary Club, the World Health Organization, and many others have reduced polio by 99% worldwide since 1979.
这一成功的功臣很多。盖茨基金会和GAVI联盟已经出资25亿多美元用于疫苗事业，并承诺还将追加100亿美元。扶轮社、世界卫生组织和其他许多组织的努力让脊髓灰质炎自1979年以来减少了99%。