Is Flavobacterium harmful to humans?


Is Flavobacterium harmful to humans?

Most Flavobacterium are harmless, but some are opportunistic or true pathogens and cause disease in a wide variety of organisms, including plants, fish, and humans.

Where does Flavobacterium live?

Members of the genus Flavobacterium are distributed widely in nature and have been isolated from various habitats such as diseased fish, microbial mats, freshwater and river sediments, seawater and marine sediments, soil, glaciers, and Antarctic lakes.

Is Flavobacterium gram positive or negative?

Flavobacterium species are nonfastidious, oxidase-positive, gram-negative rods that do not ferment glucose.

What is Flavobacterium species?

Flavobacterium is a genus of Gram-negative, nonmotile and motile, rod-shaped bacteria that consists of 130 recognized species. Flavobacteria are found in soil and fresh water in a variety of environments. Several species are known to cause disease in freshwater fish.

Is flavobacterium aerobic or anaerobic?

(flā’vō-bak-tēr’ē-ŭm), A genus of aerobic to facultatively anaerobic, non-spore-forming, motile, and nonmotile bacteria (family Achromobacteraceae) containing gram-negative rods; motile cells are peritrichous. These organisms characteristically produce yellow, orange, red, or yellow-brown pigments.

How do fish get columnaris?

Causes. The bacteria usually enter fish through gills, mouth, or small wounds, and is prevalent where high bioloads exist, or where conditions may be stressful due to overcrowding or low dissolved oxygen levels in the water column. The bacteria can persist in water for up to 32 days when the hardness is 50 ppm or more.

What is the colony morphology of flavobacterium?

Abstract. Four different colony morphologies were produced by Flavobacterium columnare strains on Shieh agar plate cultures: rhizoid and flat (type 1), non-rhizoid and hard (type 2), round and soft (type 3), and irregularly shaped and soft (type 4).

What are the symptoms of Aeromonas?

Aeromonas enteric infection may range from, most commonly, an acute watery diarrhea to dysenteric illness. Symptoms may include abdominal cramps (70%), nausea (40%), vomiting (40%) and fever (40%). Infection is usually self-limiting and children may be rarely hospitalized because of dehydration.

How do humans get Aeromonas?

Aeromonas are found in water and infection can occur from swallow contaminated water, handling contaminated fish or water, and not washing hands thoroughly. Proper hand washing can reduce the risk transfering infection from one person to anouther.

How do you treat Flavobacterium?

Rifampin, clindamycin, trimethoprim-sulfamethoxazole, cefoxitin, and vancomycin are among the antimicrobial agents which may be clinically useful to treat infections caused by flavobacteria.

How does flavobacterium move?

Flavobacterium johnsoniae moves rapidly over solid surfaces by gliding motility, which results in colony spreading.

What disease does Aeromonas cause?

Miscellaneous extraintestinal sites — Aeromonas spp have been implicated in cases of ocular infections, osteomyelitis, meningitis, respiratory infections following “near drowning,” pelvic abscesses, otitis, cystitis, endocarditis, peritonitis, cholecystitis, and joint infections [4,8,21,71-73].

Where is Aeromonas found?

Aeromonas spp. are commonly found in ground water; drinking water at treatment plants, distribution systems, and reservoirs; and in clean and polluted lakes and rivers 1. The bacteria are found in about 1% – 27 % of drinking water 11 Aeromonas hydrophila can be found in fresh produce, meat, and dairy products.

How do I get rid of fungus on my fish’s mouth?

Treatment. Antibiotics that act against gram-negative bacteria, such as kanamycin, should work well against mouth fungus. Antibacterial medications such as phenoxyethanol (at 100 mg/l, for 7 days) and nifurpirinol (also known as furanace or nitrofurazone, 0.2 mg/l, for up to 5 days) have also been used with success.

Is fish TB contagious to other fish?

Mycobacterium spp. can infect mammals, birds, reptiles and fish. Some species will cause a localized infection, while others a full-body, systemic disease. This disease is called “fish tuberculosis” since Mycobacterium tuberculosis is the causative agent for tuberculosis in humans.

How do I remove columnaris from my tank?

Treatment. External infections should be treated with antibiotics, chemicals in the water, or both. 1 Copper sulfate, Acriflavine, Furan, and Terramycin may all be used in the water to treat columnaris. Terramycin has proven to be quite effective both as a bath, and when used to treat foods for internal infections.