Hope in the face of adversity.

That is the message of Sufi Mujhgan, a polio worker from Pakistan. There are days where she feels like quitting, but she doesn’t give up. Her fight to keep Pakistani women and children polio free is her national duty, she says.

In 2016, Pakistan tops the list of nations struggling with the battle against polio. The virus continues to circulate, especially among children under the age of five. It’s been a difficult disease for the country to eradicate in a culture suspicious of government healthcare.

“There are a lot of myths created about it,” says Mujhgan, who has to work hard to earn people’s trust and convince them to get a vaccine. “There are days where I just feel like quitting.”

It’s Global Citizens like Mujhgan whose effort on the frontline deserve recognition on World Polio Day. And she is fiercely hopeful. Right now, Mujhgan is hard at work on the path to an ambitious goal: to make Pakistan polio-free by 2016.

“I have one piece of advice,” she says. “Which is to never lose hope.”