Regarding Brucellosis, all of these are true except?
Ans. is 'a' i.e., Man to man transmission Man to man spread does not ordinarily occur, but very rarely transmision has been repoed through placenta, breast feeding and sex. . Human brucellosis is a zoonosis, acquired from animals directly or indirectly. . Blood culture is most definitive method for the diagnosis of brucellosis. - Ananthanarayan 7"/e p. 349. . Br. melitensis is the commonest cause of symptomatic disease in humans. - Harrison 18`"/e p. 1296 . Brucella is transmitted to humans by accidental contact with infected animal feces, urine, milk and tissues. The common sources of infection for human are : . Unpasteurized milk, milk products. (Most impoant) . Cheese . Occupational contact with infected animals e.g. farmers, veterinarians, slaughter house workers. . Occasionally the airborne infection may occur due to inhalation of dried material of animal origin. . Infection by contact occurs when brucellae in infected tissues, blood, urine, vaginal discharge, aboed fetuses and placenta enter through abraded skin, mucosa or conjuctiva (mucocutaneous route). Note ? . Erythritol has a specially stimulating effect on the growth of brucellae. Brucellae have a predilection for the placenta due to presence in it of erythritol. . Culture media for brucella --> Serum dextrose agar, serum potato infusion agar, Trypticase Soy agar, Tryptase agar. . Brucell is capnophilic (require 5-10% CO2 for growth).
Man to man transmission
A zoonosis
Blood cultures used in diagnosis
B melitensis is the most common cause