Background
Methods
Clinical definitions
Study design and population
Identification of E. coli
Molecular diagnostic methods for DEC
Serotyping
Antimicrobial sensitivity test
Molecular characterization of antibiotic resistance genes
Statistical analysis
Results
Clinical features
Characteristic | Number (%) |
---|---|
Age(months) | |
0–11 | 166(24.3%) |
12–23 | 189(27.7%) |
24–35 | 101(14.7%) |
36–47 | 116(16.9%) |
48–59 | 112(16.4%) |
Sex | |
Male | 421(61.6%) |
Female | 263(38.4%) |
Season | |
Spring(January–March) | 161(23.5%) |
Summer(April–June) | 252(36.8%) |
Autumn(July–September) | 123(18.0%) |
Winter(October–December) | 148(21.6%) |
Clinical Symptoms | |
Nausea | 60(10.8%) |
Vomiting | 114(20.6%) |
Abdominal pain | 268(48.3%) |
Fever(> 37.2 °C) | 97(17.4%) |
others | 16(2.9%) |
Prevalence and epidemiological characteristics of DEC among infected children
Serotypes of EPEC and diagnosis of O157:H7
Antibiotic resistance of DEC
Molecular analysis of antibiotic resistance genes among DEC strains
Sex | Age(month) | Seasonality | Carbapenemase genes | ESBLs genes | |
---|---|---|---|---|---|
EPEC(16/27) | |||||
aEPEC(12/21) | |||||
TJ1 | Female | 12–23 | Autumn |
blaNDM-1
|
blaCTX-M-55
|
TJ2 | Male | 0–11 | Autumn |
blaTEM-1
| |
TJ3 | Female | 12–23 | Summer |
blaCTX-M-14
| |
TJ4 | Female | 0–11 | Winter |
blaTEM-1
| |
TJ5 | Male | 12–23 | Winter |
blaCTX-M-55
| |
TJ6 | Male | 24–35 | Autumn |
blaCTX-M-137;blaTEM-1
| |
TJ7 | Male | 24–35 | Autumn |
blaCTX-M-14;blaTEM-1
| |
TJ8 | Male | 36–47 | Autumn |
blaCTX-M-55;blaTEM-1
| |
TJ9 | Male | 36–47 | Autumn |
blaCTX-M-15
| |
TJ10 | Male | 0–11 | Summer |
blaTEM-214
| |
TJ11 | Male | 48–59 | Winter |
blaNDM-1
| |
TJ12 | Male | 0–11 | Autumn |
blaTEM-1
| |
tEPEC(4/6) | |||||
TJ13 | Female | 24–35 | Summer |
blaCTX-M-15
| |
TJ14 | Male | 0–11 | Summer |
blaTEM-1
| |
TJ15 | Male | 36–47 | Autumn |
blaCTX-M-55
| |
TJ16 | Female | 24–35 | Summer |
blaTEM-1
| |
EAEC(3/11) | |||||
TJ17 | Male | 0–11 | Autumn |
blaCTX-M-55;blaTEM-214
| |
TJ18 | Female | 0–11 | Autumn |
blaCTX-M-55;blaTEM-214
| |
TJ19 | Male | 24–35 | Autumn |
blaCTX-M-55;blaTEM-1
| |
ETEC(3/8) | |||||
TJ20 | Male | 0–11 | Autumn |
blaCTX-M-15
| |
TJ21 | Male | 36–47 | Winter |
blaCTX-M-15
| |
TJ22 | Male | 48–59 | Autumn |
blaCTX-M-55;blaTEM-1
| |
EIEC(1/2) | |||||
TJ23 | Male | 0–11 | Spring |
blaKPC-2
|
blaCTX-M-65;blaTEM-1
|
STEC(2/2) | |||||
TJ24 | Female | 0–11 | Summer |
blaCTX-M-15;blaTEM-1
| |
TJ25 | Male | 0–11 | Summer |
blaCTX-M-15
| |
Co-infection | |||||
aEPEC + ETEC (2/3) | |||||
TJ26 | Male | 0–11 | Autumn |
blaCTX-M-55
| |
TJ27 | Male | 0–11 | Autumn |
blaCTX-M-14
| |
tEPEC + EAEC(1/1) | |||||
TJ28 | Male | 12–23 | Winter |
blaCTX-M-55;blaTEM-1
|