Summary of AMR genes in the tested population.

<p>Summary of AMR genes in the tested population.</p

Metadata and phenotypic antimicrobial susceptibility for individual isolates.

<p>Metadata and phenotypic antimicrobial susceptibility for individual isolates.</p

Antimicrobial resistance of <i>Klebsiella pneumoniae</i> stool isolates circulating in Kenya

<div><p>We sought to determine the genetic and phenotypic antimicrobial resistance (AMR) profiles of commensal <i>Klebsiella</i> spp. circulating in Kenya by testing human stool isolates of 87 <i>K</i>. <i>pneumoniae</i> and three <i>K</i>. <i>oxytoca</i> collected at eight locations. Over one-third of the isolates were resistant to ≥3 categories of antimicrobials and were considered multidrug-resistant (MDR). We then compared the resistance phenotype to the presence/absence of 238 AMR genes determined by a broad-spectrum microarray and PCR. Forty-six genes/gene families were identified conferring resistance to β-lactams (<i>ampC</i>/<i>bla</i>_DHA, <i>bla</i>_CMY/LAT, <i>bla</i>_LEN-1, <i>bla</i>_OKP-A/OKP-B1, <i>bla</i>_OXA-1-like family, <i>bla</i>_OXY-1, <i>bla</i>_SHV, <i>bla</i>_TEM, <i>bla</i>_CTX-M-1 and <i>bla</i>_CTX-M-2 families), aminoglycosides (<i>aac(3)-III</i>, <i>aac(6)-Ib</i>, <i>aad</i>(A1/A2), <i>aad</i>(A4), <i>aph</i>(AI), <i>aph3/str</i>(A), <i>aph6/str</i>(B), and <i>rmtB</i>), macrolides (<i>mac</i>(A), <i>mac</i>(B), <i>mph</i>(A)<i>/mph</i>(K)), tetracyclines (<i>tet</i>(A), <i>tet</i>(B), <i>tet</i>(D), <i>tet</i>(G)), ansamycins (<i>arr</i>), phenicols (<i>catA1/cat4</i>, <i>floR</i>, <i>cmlA</i>, <i>cmr</i>), fluoroquinolones (<i>qnrS</i>), quaternary amines (<i>qacE</i>Δ<i>1</i>), streptothricin (<i>sat2</i>), sulfonamides (<i>sul1</i>, <i>sul2</i>, <i>sul3</i>), and diaminopyrimidines (<i>dfrA1</i>, <i>dfrA5</i>, <i>dfrA7</i>, <i>dfrA8</i>, <i>dfrA12</i>, <i>dfrA13/21/22/23</i> family, <i>dfrA14</i>, <i>dfrA15</i>, <i>dfrA16</i>, <i>dfrA17</i>). This is the first profile of genes conferring resistance to multiple categories of antimicrobial agents in western and central Kenya. The large number and wide variety of resistance genes detected suggest the presence of significant selective pressure. The presence of five or more resistance determinants in almost two-thirds of the isolates points to the need for more effective, targeted public health policies and infection control/prevention measures.</p></div

Summary of antimicrobial phenotypic susceptibility for diarrheal and control isolates.

<p>Summary of antimicrobial phenotypic susceptibility for diarrheal and control isolates.</p