Abstract:Changes of immunological reactivity to viral and bacterial antigens can cause in-creased susceptibility to infectious diseases. Different levels of this changes in newborn and adult animal organisms should be based on the fetus and newborn reactivity, first coming into contact with the antigen after birth, whereas the adult organism already has partial sensitization. Chronic vectors of pathological agents in animals and their in-fluence on the spread of infectious process is a persisting problem of modern vete… Show more
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