Imported drug-resistant stomach bug spreading in USA drug-resistant strain of a nasty stomach bug made its way into the U.S. and spread, causing more than 200 illnesses since last May, health officials said Thursday. Many cases were traced to people who had recently traveled to the Dominican Republic, India or other countries. Outbreaks of the shigella (shih-GEHL’-uh) bacteria are not unusual, but this strain is resistant to the antibiotic most commonly prescribed for adults. “This is the first time we’ve documented this large an outbreak of antibiotic-resistant (shigella) linked to international travel,” said Dr. Anna Bowen of the Centers for Disease Control and Prevention. Since last May, the imported superbug has sickened at least 243 people, with large recent outbreaks in Massachusetts, Pennsylvania and California. FULL REPORT