Identification of enterococcus genus

Overview
Enterococcus bacterial domain, thick-walled gate, Bacillus spores, Lactobacillus, enterococcus; widespread presence in the environment (soil, water, plants, animals); human gastrointestinal tract and female reproductive tract; different types of E. coli prevalence depend on the host, but also due to factors related to age, diet and other physiological conditions.Epidemiology
Enterococcus is the third most common pathogenic bacteria in endogenous and exogenous hospital infections (second only to Staphylococcus aureus and E. coli)
Data
statistics
, among the pathogenic bacteria causing urinary tract infections, enterococcal infections ranked second
celiac pelvic infections (E. coli 3rd)
sepsis (e. coli ranked No. 3) 3, the disease death rate of 12.6%-57%)clinically with fecal enterococcal infections accounted for about 80%, but in the past 20 years, the infection caused by e. coli rose to 30%-40%, Chinese e. coli Infections are rising faster, with Mohnarin's 2008 annual report on enterococcal infections accounting for 40-50% of enterococcal infections, and in 1979, Evans first reported coliococcal, 80 It is resistant β-endamides and glycopeptides, and was first discovered in 1986 as 1910-resistant enterococcal (VRE).biological characteristics
(i) individual morphological characteristics
G-C anaerobic, round, egg round; single, paired, short-chained, H2O2(-), membrane (-), spores (-), partly sparse whiplash (leaded enterococci), Lancefield Group D: Most strains produce a cell wall-related glycerophosphate
antigen
, which is identified as streptococcus group D antigen (80%), suitable for temperature 35-37 degrees C Most bacteria grow at 10 degrees C and 45 degrees C.(ii) Fall features
BA: gray-white, opaque, smooth surface, diameter 0.5-1 mm, α-, insoluble blood, a few β-Chinese blue/Irma/McConkai/SS: growthable, but smaller, fermented lactose strains can form small blue or pink bacteria.
liquid
culture
base: uniform turbid growth.(iii)
Bio-
Reactions
PYR (-) Colicobacter pyrethroids, Colombian enterococcus,
LAP (plus)
6 .5% NaCl(-)
bile hexalytosides (-)
H2O2(-) Enterococcus does not contain cytochromase, but occasionally tests positive in the contactase test due to the occasional production of false tentacles.
between genus
and Lactobacillus: Lactobacillus does not grow at 45 degrees C and McConkai, containing Lancefield N group antigens, the opposite of enterococcal.
identified with streptococcus and bovine streptococcus: enterococcus can grow at 10 degrees C and 6.5% NaCl, and is highly resistant to penicillin, as opposed to streptococcus.
VRE and colorless algal genus and tablets of the genus: enterococcal polyPYR (plus), fermented glucose acid production is not gas-producing, colorless algal genus PYR(-), colorless algal bacteria are fermented glucose acid-producing gas.