US Army Col. Clinton Murray, 48, an infectious-diseases doctor, was deployed to the region four times between 2003 and 2015, working in military hospitals and clinics across the country.
He said that drug-resistant or "superbug" infections meant some soldiers had problems for years after their initial life-altering injuries. When common antibiotics failed, higher doses of antibiotics, new drug combinations or alternative drugs with severe side effects were tried, but many had repeat and prolonged infections. Others had to undergo extra surgeries or amputations to stop the bacteria from spreading further.
The US Army soon realized that drug resistance was a serious problem and, from 2009, introduced programs to reduce drug resistance in its military hospitals -- but the problem was just as bad, if not worse, in nearby civilian hospitals.
When things got really bad for the Army, soldiers were evacuated to two US hospitals. One was Brooke Army Medical Center
in Texas, where Murray also ran the infectious-diseases department.
Civilians, however, had fewer resources and no way out.
Afghan citizens are dying because of the war, and drug resistance will mean even more deaths, said Dr. Nasimullah Bawar, head of health programme at BRAC Afghanistan
, a nongovernmental organization providing drugs and maternity, child health, immunization, nutrition, mental health and malaria and TB-control services in four provinces.
Bawar compares superbugs to another scourge, the Islamic State or Daesh, because it will disrupt the country and kill many citizens: "This is going to be another Daesh, I can say."
Making the situation even tougher is 40 years of conflict.
A military struggle against 'Iraqibacter'
Military doctors started noticing an influx of patients with multidrug-resistant infections from 2003, two years after the Afghanistan war started, but it was years before the Army identified the scope of the problem.
Infections from a resistant form of one type of bacteria, Acinetobacter baumannii, became so common in Iraq and then Afghanistan that the soldiers gave it a nickname: "Iraqibacter." The bug had usually been a problem in older or very sick patients who had spent months in the hospital, but doctors were now seeing it in young, fit soldiers, commonly in blast wounds.
At the peak of the problem, between 2004 and 2006, the budget for one class of last-resort antibiotics called carbapenems, used for severe and multidrug-resistant infections, went up more than 400%.