A teacher gives a deworming tablet to a student during National Deworming Day at a high school in Hyderabad, India in 2017.

An Indian teacher gives a deworming tablet to a student during National Deworming Day at a Government High School in Hyderabad on August 10, 2017. / AFP PHOTO / NOAH SEELAM (Photo credit should read NOAH SEELAM/AFP via Getty Images)