simply isn't testing enough on the imported market to really find all of these violent of residues dr rangan had a study of imported shrimp for the june two thousand and fifteen issue of the influential magazine consumer reports of the two hundred five imported farm samples that we found a leaven of those actually had illegal residues of antibiotics on them that comes out to about five percent of the imported farm shrimp samples being contaminated with an illegal antibiotic residue the fact that the f.d.a. only tests about point seven percent of all the shrimp in this country for those. antibiotic residues suggests that the agency is not actually testing enough shrimp to catch the amount of illegal residue products that may be coming into the market however many of the countries that export the shrimp permit the use of antibiotics when you feed low levels of antibiotics every day you're not feeding them enough to necessarily kill bacteria those bacteria can become resistant to those antibiotics and that can make those antibiotics less effective in people if we're infected by those bacteria j