bacterial allergy

Also found in: Dictionary, Thesaurus, Encyclopedia.

bac·te·ri·al al·ler·gy

1. type I hypersensitivity allergic reaction caused by bacterial allergens;
2. the delayed type of skin test (type IV hypersensitivity reaction), so called because of its early association with bacterial antigens (for example, the tuberculin test).

bacterial allergy

(1)An obsolete, nonspecific term for an allergy allegedly due to bacterial products, formerly thought to be a type of hypersensitivity.
(2) An obsolete term for any delayed hypersensitivity test (e.g., tuberculin test) using a bacterial antigen.

bac·te·ri·al al·ler·gy

(bak-tērē-ăl alĕr-jē)
1. Type I hypersensitivity allergic reaction caused by bacterial allergens.
2. Delayed type of skin test (type IV hypersensitivity reaction), so called because of its early association with bacterial antigens (e.g., the tuberculin test).


an altered reactivity following second or subsequent exposure to antigen (allergen). See also hypersensitivity, allergic.

atopic allergy
hereditary predisposition to develop certain allergies. See atopy.
bacterial allergy
a specific hypersensitivity to a particular bacterial antigen, e.g. Mycobacterium tuberculosis; it is dependent on previous infection with the specific organism.
bronchial allergy
cold allergy
a condition manifested by local and systemic reactions, mediated by histamine, which is released from mast cells and basophils as a result of exposure to cold.
delayed allergy
see delayed hypersensitivity.
drug allergy
see drug allergy.
drying-off allergy
see milk allergy (below).
food allergy
called also gastrointestinal allergy; see food hypersensitivity.
gastrointestinal allergy
see food allergy (above).
hereditary allergy
an allergy with a hereditary predisposition. The tendency to develop some forms of allergy is inherited, but the specific clinical form is not. IgE, formerly called reagin or reaginic antibody, may be involved. See also atopy.
induced allergy
allergy resulting from the injection of an antigen, contact with an antigen, or infection with a microorganism, as contrasted with hereditary allergy.
inhaled allergy
see atopy.
milk allergy
a hypersensitivity to the milk protein, α-casein. Signs, varying from urticaria to anaphylaxis, have occurred in Jersey cows when milk escapes from the udder into the bloodstream during the drying off period.
physical allergy
a condition in which physical agents, such as heat, cold or light, trigger an allergic response.


pertaining to or caused by bacteria.

bacterial adhesiveness
bacterial allergy
see bacterial hypersensitivity.
cutaneous bacterial granuloma
bacterial diseases
diseases in which bacteria play a significant but not necessarily exclusive role.
bacterial fermentation
fermentation is more commonly a function of yeasts but is performed by some bacteria, e.g. those in the rumen. See also fermentation.
bacterial food poisoning
see food poisoning.
bacterial gill disease
see gill disease.
bacterial kidney disease of fish
a serious disease of salmonid cultures characterized by granuloma in the kidney and spleen, and extensive caseation of muscles. The disease is chronic and causes heavy losses. The cause appears to be a minute gram-positive coccobacillus Renibacterium salmoninarum.
bacterial overgrowth
a syndrome of malabsorption causing chronic or recurrent diarrhea in dogs. Believed to be due to the presence in the small intestine of an abnormally large population of Clostridium spp. and other enteric bacteria normally found in the colon.