In an article written by Walter Orenstein, the former director of the United States’ National Immunization Program, discusses what could possibly be the finally push to eradicate polio forever. From April 17 through May 1, healthcare workers and government officials are working with 155 countries to make the switch from the trivalent OPV to the bivalent OPV version of the life-saving vaccine, making this the largest vaccine rollout in history. According to his article, over the past 30 years polio cases have been reduced by 99.9 percent, and the only nations where wild polio is still evident are Pakistan and Afghanistan. However, Orenstein feels strongly that this unified global push could end polio for good.

For the full article, visit Time.com.