On a Sunday evening last August, a boy in Githunguri, Kiambu County complained to his parents of unbearable pain above his knee, prompting a visit to the hospital.

“The doctor ordered an X-ray, and when the results came out, he said he had osteomyelitis: an infection in the bone,” says Mercy Kibiro, the boy’s mother

They left the hospital with a prescription for various medications. However, the pain persisted and worsened with each passing day.