In April 2016, something extraordinary happened in global
health. Thousands of community health workers in more than 120 countries — from
African villages to the Himalayas to the Pacific Islands — all mobilized and
synchronized their efforts to switch from one oral polio vaccine to another.
Any slip-ups could have resulted in creating more “vaccine-derived” poliovirus
cases at a moment when we are down to our last few cases of polio.
The fact that many children receiving such oral vaccines were
living in areas of high conflict and low development (which means low levels of
health infrastructure) made the accomplishment all the more remarkable.
The feat was accomplished in a single day (each country was
told to pick one day within a two-week period in April 2016 to make the change).
The story of this amazing synchronized
switch constitutes an untold global health success story and can be told
with the backdrop of the current
number of wild poliovirus type 1 cases down to only 15 — 10 in Afghanistan
and 5 in Pakistan.
The polio eradication community had hoped that we would be down to zero by 2017.
Now they are hoping it will happen in 2018.


