True about campylobacter-
Polar flagella
Grows at 25degC
Strict aerobe
Psychrophilic
Ans. is 'a' i.e., Polar flagella Campvlobactoro Campylobacter is gram negative, non capsulated, non sporing comma shaped or 'gull wing' shaped bacilluso It is motile by a single polar flagellum and shows darting or tumbling motility.o Campylobactor is nonfermenter (does not ferment carbohydrate); catalase and oxidase positive; and nitrate reduction positive.Gram negative curved spiral rods - Campylobactor jejuniCulture characteristicso Growth occurs under microaerophilic conditions (5% O2, 10% CO2 and 85% N2).o Thermophilic, growing at 42degC (Can grow at 37degC, but incubation at higher tempratures suppresses normal fecal flora).o Transport medium for Campylobacter is Cary-Blair medium.o Media used for cultivation of Campylobacter are:-i) Campy BAP mediumii) Skirrow's mediumiii) Butzlers mediumiv) CVA (Cefoperazone, Vancomycin and amphotericin B)v) Campylobactor agar basevi) Columbia blood agarInfections caused by Campylobactero Campylobacter causes following infections:1) Diarrheal disease# It is the most common disease and is caused most commonly by Campylobacter jejuni.# It is a zoonosis and animals are the main reservoir.# Source is food of animal origin like raw milk and poultry.# Infection occurs by ingestion.# The jejunum and the ileum are the primary sites of colonization.# C. jejuni is invasive pathogen, may involve mesenteric lymph node and cause bacteremia.# After an incubation period of 1-7 days there is fever, abdominal pain and diarrhea. Diseases is usually self limiting and subsides in 5-8 days. But complications may occur :-i) GIT: Cholecystitis, pancreatitis.ii) Extraintestinal: Meningitis, endocarditis, HUS, GB syndrome, arthritis, perotinitis.2) Abscesses# It is caused by Campylobacter sputorum.3) Extraintestinal infections# These are caused by Campylobacter fetus.
General