How can the doctors save the children of Nome from diptheria?

The doctors can save the children of Nome from diphtheria by immediately administering antitoxin to those who have been infected, isolating affected individuals to prevent the spread of the disease, and vaccinating the entire population to prevent further outbreaks. They can also provide supportive care such as oxygen therapy and intravenous fluids to help the children recover. Additionally, doctors can work with public health authorities to implement quarantine measures and educate the community on preventive measures such as handwashing and covering coughs and sneezes.