Doctor Alexander Tiendrebeogo from the World Health Organization says the disease causes no pain at first.

VOA: special.2009.04.06

Both Plutarch and Arrian believed that Alexander died of a disease, and Plutarch rather brusquely rejected the idea that he was poisoned.

FORBES: What Caused The Death Of Alexander The Great?

Dr Alexander, who is retired and suffers from Parkison's Disease, was accused of not checking the medical records of the inmates thoroughly enough.

BBC: News | Health | Prison doctor struck off over inmates' deaths

"The disease is common, but the fatalities are the puzzle we're trying to figure out, " says Dr. Jim Alexander, a molecular virologist with the Atlanta-based Centers for Disease Control and Prevention.

CNN: Why Are the Infants Dying?