What diseases does Alcaligenes faecalis cause?

faecalis has been associated with endocarditis, bacteremia, meningitis, endophthalmitis, skin and soft tissue infections, urinary tract infections, otitis media, peritonitis, and pneumonia [1, 2, 7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28]. A.

Where is Alcaligenes found?

Natural habitat. Alcaligenes are found in soil and water and are common inhabitants of the intestinal tracts of some animals.

Is Alcaligenes a lactose fermenter?

Abstract. Stenotrophomonas maltophilia, Burkholderia cepacia complex, Elizabethkingia spp., Chryseobacterium spp., Achromobacter spp., and Alcaligenes spp. are less-common non–lactose-fermenting bacteria that have emerged as important opportunistic pathogens.

Are Alcaligenes pathogenic?

Achromobacter and Alcaligenes spp. are opportunistic human pathogens causing sporadic cases of pneumonia, septicemia, peritonitis, and urinary tract and other infections.

How common is Alcaligenes faecalis?

faecalis were less than 50%. Conclusions: The most frequent Alcaligenes faecalis infection sites, in order, are the bloodstream, urinary tract, skin and soft tissue, and middle ear. The susceptibility rate of Alcaligenes faecalis to commonly used antibiotics is decreasing.

Is Alcaligenes faecalis harmful?

Introduction. Alcaligenes faecalis is a species of gram-negative, rod-shaped, aerobic bacteria commonly found in the environment. A. faecalis-associated nosocomial infections are common in hospitalized patients, but serious life threatening infections are rare.

What does Alcaligenes faecalis smell like?

The distinctive properties of an Alcaligenes-like organism isolated from human pathological material are described. The organism is readily recognizable by its characteristic colonial appearances, fruity smell and greening of blood agar.

Is Alcaligenes faecalis Halophile?

Alcaligenes=NOT a halophile.

How do you identify Alcaligenes faecalis?

faecalis is a Gram-negative bacterium which appears rod-shaped and motile under a microscope. It is positive by the oxidase test and catalase test, but negative by the nitrate reductase test. It is alpha-hemolytic and requires oxygen.

Does alcaligenes reduce nitrate?

faecalis could only reduce nitrite aerobically and could not reduce nitrate aerobically or anaerobically. Aerobic and anaerobic growth of A.

What color is Alcaligenes faecalis?

Bacteria Collection: Alcaligenes faecalis Additional Information

Enzyme Tests Text: Beta-galactosidase : -,Lecithinase / alpha : –
Temperature For Growth Text: at 37°C : Yes
Colony Appearance Text: smooth : Yes,shiny : Yes
Colony Color Text: white : Yes
Colony Text: convex : Yes,entire : Yes,irregular : Yes

Does Alcaligenes faecalis ferment?

Alcaligenes is a genus of Gram-negative, aerobic, rod-shaped bacteria. The species are motile with amphitrichous flagella and rarely nonmotile. It is a genus of non-fermenting bacteria (in the family Alcaligenaceae).

Is Alcaligenes faecalis aerobic or anaerobic?

Alcaligenes faecalis is an aerobic bacillus known to inhabit soil and water environments (5).

Is a faecalis pathogenic?

Some pathogenic bacteria belong to a large, diverse group of species capable of infecting plants, animals, and humans. Enterococcus faecalis is an opportunistic human pathogen capable of infecting patients with a deficient immune system.

What is Alcaligenes faecalis resistant to?

Alcaligenes faecalis is generally resistant to aminoglycosides, chloramphenicol and tetracyclines and usually susceptible to trimethoprim–sulfamethoxazole and β-lactam antibiotics such as ureidopenicillins, ticarcillin–clavulanic acid, cephalosporins and carbapenems.

What is the optimal pH for a faecalis?

faecalis grows in a wide range of pHs (5.0 to 9.6) with a pHo between 7.0 and 7.5. Nevertheless, a higher pH (pH 10.5) was necessary to induce maximal tolerance against pH 11.9 (data not shown).

What is the morphology of Alcaligenes faecalis?


Gram Stain: Negative.
Morphology: Coccal or cocci.
Size: 0.5 – 1.0 micrometers by 0.5 – 2.6 micrometers.
Motility: Motile with peritrichous flagella.
Capsules: No.

Does Alcaligenes faecalis grow on MacConkey Agar?

temperature is 20-37 ºC. Can grow on MacConkey agar and Simmons’ citrate agar. Isolated from soil, water, feces, urine, blood, sputum,wounds, pleural fluid, nematodes, and insects. Subsp.

Why is Alcaligenes faecalis important?

Alcaligenes faecalis is a Gram-negative, rod-shaped bacterium with flagella, and belong to the family of Alcaligenaceae. Particularly in immunosuppressed people, the opportunistic pathogen may trigger local infections, including peritonitis, meningitis, otitis media, appendicitis, and bloodstream infection.

How do you pronounce alcaligenes?

0:01 1:07

Does a faecalis ferment lactose?

faecalis can grow in the presence of bile salts. faecalis can be cultivated on purple agar and ferments lactose under acid production (see Fig. 124:3). Slanetz and Bartley medium is used for enumeration of bacteria within the genus Enterococcus (see Fig.

How is Alcaligenes faecalis transmitted?

Alcaligenes faecalis is a gram-negative bacterium that is commonly found in the environment. This pathogen is usually transmitted in the form of droplets through ventilation equipment and nebulizers, but transmission through direct contact has also been documented in few case reports.

Is Alcaligenes faecalis normal flora?

Alcaligenes faecalis is a gram-negative organism that is commonly found in the environment and may also be a part of normal fecal flora in humans.

Where is Proteus vulgaris found in the environment?

Proteus mirabilis and Proteus vulgaris are commensals of the normal flora of the human gastrointestinal tract, but they also can be found in water and soil.

Is Alcaligenes faecalis Gram positive or negative?

Alcaligenes faecalis is a Gram-negative catalase- and oxidase-positive, motile rod. It is commonly found in a watery environment and is rarely isolated from humans.

What pH does Alcaligenes faecalis grow in?

between 5.8 and 7 It is also pH-dependent in vitro with an optimum between 5.8 and 7.

What oxygen classification is a faecalis?

Oxygen Classification

Oxygen Class Examples from Lab
Microaerophile Saccharomyces cerevisiae* *Typically facultative, but our lab strain behaved like a microaerophile
Facultative Escherichia coli, Bacillus cereus, Staphylococcus xylosus
Aerotolerant Enterococcus faecalis
Obligate Anaerobe Clostridium sporogenes

Is Alcaligenes faecalis citrate positive?

A bacillus which is a motile, non-nitrate reducing, oxidase positive, catalase positive, and citrate positive gram-negative obligate aerobe that colonises humid areas in hospitals and may transiently colonise the skin.

What kind of bacteria is Spirilla?

A spirillum (plural spirilla) is a rigid spiral bacterium that is Gram-negative and frequently has external amphitrichous or lophotrichous flagella. Examples include: Members of the genus Spirillum. Campylobacter species, such as Campylobacter jejuni, a foodborne pathogen that causes campylobacteriosis.

Is a faecalis urease positive?

Escherichia coli and Enterococcus faecalis are commonly considered urease-negative bacteria.

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