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DANMAP 2015 3D
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resistance
in indicator bacteria 7. common (figure 7.2). most of the isolates
were resistant to erythromycin, chloramphenicol and/or gentamicin (3 of 4 isolates) was also resistant to tetracycline. the levels of resistance were comparable with those from 2014, and re- sistance levels have generally been very stable over the last 15 years. an exception to this is resistance to erythromycin, which slowly increased until 2012, where after the resis- tance declined reaching levels equal to what was observed in 2001 (figure 7.2). resistance to tetracycline, chloramphenicol, erythromycin and gentamicin in e. faecalis
from domestically produced pork was significantly lower than in the isolates from pigs. the majority (86%) of the isolates from pork were fully sensitive to the tested antimicrobial agents (not including quinupristin/ dalfopristin). these differences in resistance levels between isolates from danish pigs and domestically produced pork have been apparent since the start of the danmap monitor- ing programme (figure 7.2); however no explanation has been documented. 7.1.3 e. faecalis from domestically produced beef from a total of 132 samples of domestically produced beef, 57 e. faecalis isolates was recovered and tested for antimicrobial resistance (table 7.1). enterococci were not collected from cattle in 2015. in e. faecalis from domestically produced beef , most of the isolates (88%) were fully sensitive to the antimicrobial agents included in the test panel (not including quinupristin/dalfopris- tin). all resistant isolates (n=7) were resistant to tetracycline, and one of these isolates was also resistant to erythromycin and linezolid (table 7.1). levels of antimicrobial resistances were similar to those from 2014. 7.1.4 e. faecalis from imported meat during 2015, a total of 164 e. faecalis isolates, from 345 processed samples from imported broiler meat, pork and beef, were tested for antimicrobial resistance (table 7.1). the proportion of isolates fully sensitive to the tested anti- microbial agents (not including quinupristin/dalfopristin) were lower among e. faecalis from imported broiler meat (38%), pork (55%) and beef (78%) compared to the isolates from domesti- cally produced meat. generally, the levels of resistance observed in e. faecalis from imported meat were comparable to 2014. resistance to tetracycline and co-resistance to tetracycline and erythromycin was most commonly observed (table 7.1). among all e. faecalis tested, ciprofloxacin resistance was only detected in isolates from imported boiler meat (n = 4). previously, higher levels of resistance to tetracycline, erythro- mycin and streptomycin (as well as several other compounds) have been observed in e. faecalis from imported broiler meat compared to isolates from domestically produced broiler meat. however, resistance in e. faecalis from imported and domesti- cally produced broiler meat has, in recent years, approached similar levels, and no significant differences were observed in 2015 (figure 7.1). resistance to tetracycline was higher in e. faecalis from imported pork compared with isolates from domestically pro- duced pork. this tendency has been observed for years (figure 7.2) with a small increase in levels of tetracycline resistance for imported pork meat. as observed in most years, resistance levels are similar in e. faecalis from imported beef and domestically produced beef. tetracycline resistance has only been found significantly higher in isolates from imported beef in 2012 and 2014.
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