paho is unique in that we also serve as unicef in hour region. so our consultants, when they sit across the table from the minister of health, talking about the technical data required to consider a policy, we can also talk about what we know and what we've communicated with the manufacturers, because we are the purchasing mechanism for vaccines, so this process is hugely powerful and i think has contributed to our success in eradicating polio, measles and it year i believe we stopped transmission of andemic rubella virus. paho also convenes a technical advisory group. for years and years, it was cared by dr. d. -- chaired by dr. d.a. henderson and with his retirement, it's chaired by dr. cyril and there are very technical doctors that review our work and provide us recommendations. this is an example of the seasonal influenza policy recommendation that came out of the meeting in 2006 in mexico city. and the revolving fund i mentioned, just to put it in perspective, this is a purchasing mechanism that paho coordinates so that countries en masse c