The difference between infectious diseases and non-infectious diseases is as follows: thank you.

Infectious diseases refer to diseases caused by specific pathogenic microorganisms, which have certain incubation period and clinical manifestations: infectious diseases. Including bacterial infectious diseases, such as salmonellosis and colibacillosis; Viral infectious diseases, such as pigeon Newcastle disease (Balamigo), adenovirus, pigeon pox and so on. Parasitic diseases, such as pigeon trichomoniasis and pigeon coccidiosis, and diseases caused by other pathogenic microorganisms, such as chlamydiosis, mycoplasma disease, spirochetosis, etc. Non-communicable diseases refer to diseases not caused by pathogenic microorganisms, but by other pathogenic factors. Such as nutritional diseases, metabolic diseases, toxic diseases and stress diseases. If you want to correctly distinguish infectious diseases from non-infectious diseases, you can't distinguish them from one point, but you need to make a comprehensive analysis from the following aspects. 1. Distinguish from the characteristics of diseases 1. Infectious diseases are caused by specific pathogenic microorganisms, while non-infectious diseases are not caused by specific pathogenic microorganisms. For example, Newcastle disease is caused by paramyxovirus II (pigeon Newcastle disease virus), paratyphoid is caused by salmonella, and vitamin deficiency is caused by vitamin B 1 or B6 deficiency. 2. Infectious diseases are contagious, but non-infectious diseases are not. Infectious diseases are pathogenic microorganisms discharged from contact with sick pigeons. For example, under certain conditions, such as pigeon aggregation, cage crowding, competition, etc., pathogenic microorganisms invade healthy pigeons with susceptibility, causing clinical symptoms similar to those of sick pigeons, which is the same feature of all infectious diseases. For example, the pigeon house is infected by incubation period under the super stress of gathering pigeons, squeezing cages and training; Non-communicable diseases are diseases caused by congenital genetic defects, feeding management errors, unscientific misleading or abnormal environmental climate, and are not contagious. For example, a pigeon house used moldy corn to cause aflatoxin poisoning, while another pigeon house did not get sick without this bag of feed; Gout caused by improper high protein feed, etc. Infectious diseases are epidemics, but non-infectious diseases are not. The so-called epidemic situation refers to the abnormal onset of pigeons in a non-specific time, which widely exists in horizontal transmission, and most infectious diseases have this feature. For example, Newcastle disease spread from one pigeon house to another or neighboring pigeon houses, and even caused regional or global epidemics. Non-communicable diseases do not have this feature. 4. Infectious diseases trigger specific reactions of the body, and specific immune antibodies can be obtained, but non-infectious diseases do not have this characteristic. For example, pigeons infected with Newcastle disease and pigeon pox can obtain permanent antibodies and will not be infected for life. Most infectious diseases have this feature, while uninfected young pigeons are prone to get sick. Most infectious diseases have the characteristic symptoms and course of disease. For example, the first symptom of Newcastle disease is usually respiratory symptoms, followed by defecation, then tilt and other symptoms. The first symptom of adenovirus is crop accumulation or frequent vomiting, which will not appear until the middle and late stage of the disease, until the third to fourth day of onset, and then there will be symptoms such as defecation. Only in the case of secondary infection by Salmonella or Escherichia coli will there be two different symptoms of failure. 6. Non-communicable diseases are directly related to objective conditions, while infectious diseases are not directly related to objective conditions. Such as high humidity, low temperature, design defects of pigeon house, excessive ventilation or poor ventilation, resulting in seasonal colds of young pigeons and sub-healthy pigeons living in nests and landing nests. The occurrence of infectious diseases and the objective conditions such as temperature and environment only play a role in fueling the fire, aggravating disease symptoms and increasing mortality, and are not directly related. 2. Distinguish between 1 and epidemiology. Most infectious diseases have obvious ages, but the incidence of non-communicable diseases is not limited by this. Such as Newcastle disease, pigeon pox and adenovirus. Infected with young pigeons almost every year. Most infectious diseases have obvious seasonality. For example, Newcastle disease, influenza, etc., occur frequently in late autumn and early winter. This is because the season affects the survival and spread of pathogenic microorganisms in the external environment, and the long sunshine time and high temperature in summer are not conducive to the survival of Newcastle disease and influenza virus. Coccidiosis is easy to occur in humid environment in spring rainy season, which is related to the high air humidity in rainy season and the sudden increase of oocysts density in pigeon houses suitable for coccidiosis breeding. Pigeon pox is easy to occur in summer and autumn, which is related to the reproduction of arthropods such as mosquitoes, flies and mites. Non-communicable diseases do not have this feature except for physical factors such as heatstroke. 3. Infectious diseases have a certain course from infection to onset. The whole process of onset is divided into four stages: incubation period, precursor period, onset period and recovery period. Non-communicable diseases have no course characteristics. 4. Infectious diseases are not necessarily limited to the mutual transmission between animals of the same species, such as zoonotic diseases such as influenza and salmonellosis, but can also spread among people, livestock and birds (pigeons). Non-communicable diseases have no course characteristics. 3. Distinguish between 1 and symptoms. Pigeons with infectious diseases often have premonitory symptoms such as fear of cold, neck constriction, cold and fever, and listlessness, while non-infectious diseases may not necessarily have such symptoms. Such as pigeon Newcastle disease and salmonella disease. The defects in nutrition, metabolism and management are not necessarily symptoms such as fear of cold, fever and listlessness. 2. Most infectious diseases will have multiple system symptoms such as respiratory tract and digestive tract. However, most non-communicable diseases do not necessarily have typical multi-system comprehensive symptoms such as respiratory tract and digestive tract except poor ventilation and high dust. 3. Most infectious diseases have their inherent fixed and specific patterns in the process of pathological changes. For example, respiratory symptoms first followed by digestive symptoms or digestive symptoms first followed by respiratory symptoms. For example, pigeon Newcastle disease and pigeon laryngotracheitis always have respiratory symptoms first, and then digestive tract symptoms such as diarrhea; However, pigeon cholera and salmonella always have digestive symptoms first, then respiratory symptoms, and they have the same regularity in the same course of disease. Such as diarrhea and other digestive tract symptoms 3~4 days after onset. However, non-communicable diseases often have multiple systemic symptoms at the same time, and only have different degrees of damage, but there is no such typical consistent law. 4. It is different from epidemic prevention 1. Most infectious diseases can be vaccinated, so that the body can obtain specific antibodies and obtain immune protection. Anyone who has been vaccinated is usually not infected except for immune failure. Such as Newcastle disease and pigeon pox. 2. Most pathogens of infectious diseases are sensitive to disinfectants and can be effectively controlled by strengthening disinfection measures in pigeon houses, while non-infectious diseases have nothing to do with disinfection measures. Such as influenza and pigeon cholera. 5. From the treatment effect, infectious diseases can be effectively controlled by sensitive antibacterial drugs, while non-infectious diseases must be alleviated by targeted causes, and the use of antibacterial drugs is ineffective. 6. Different from clinical practice 1. Infectious diseases should be considered first, but the possibility of infectious diseases can be ruled out. Because the occurrence of infectious diseases is a devastating disaster, threatening the health and safety of pigeons and affecting the "fighting capacity"-the performance of competitions, the survival rate of pigeon houses-the performance of public sheds. In order to control infectious diseases quickly and effectively, we must find, diagnose and treat them early. Grasping the effective opportunity, grasping early, accurately and well is the most effective means to save pigeon-loving creatures, effectively control the epidemic situation and reduce the mortality rate of pigeon houses. 2. Pigeonhouses suddenly or successively have diseases with similar symptoms, and the countdown should be calculated according to the incubation period of various infectious diseases. Lenovo should consider whether it has recently taken in passing pigeons, introduced breeding pigeons, released pigeons and contacted sick pigeons outside the house, visited sick pigeon houses or pigeon friends in sick pigeon houses, and investigated whether there are similar sick pigeons in nearby pigeon houses. However, according to the most likely infectious diseases in the season, the elimination method should be adopted to eliminate them one by one. 3. Pigeonhouses suddenly or successively have diseases with similar symptoms. The first thing to investigate is the feed feeding factors. For example, the disease of pigeons occurs in moldy feed after changing feed and before the autumn harvest, or in concentrated grain and seed feed mixed with drugs after spring sowing. These are the most easily overlooked and common diseases in pigeon houses, and they are extremely simple and quick to treat. 4. If diseases with similar symptoms suddenly or successively appear in the pigeon house, we should start with the weak environmental conditions of our own pigeon house, the negligence of feeding management, poor nursing, bad climate and other reasons, find out the suspicious factors that may cause the disease, and eliminate them one by one, so as to obtain reliable etiological basis, which is conducive to timely symptomatic treatment of the cause. 5. Pigeons with similar symptoms suddenly or successively appear in the pigeon house. If they use some nutrition and health care additives in the near future or for a long time, they should carefully check and sort out the instructions of these products. Is it correct to use them? Is the ratio reasonable? Is there any incompatibility? For example, the imbalance between vitamins and trace elements, excessive carnitine and so on. And this kind of fashionable diseases have occurred from time to time in recent years and are on the rise. 6. People are not omnipotent when diseases with similar symptoms suddenly or successively appear in the pigeon house. For those diseases that are unexplained, unfamiliar, inexperienced and lack of practical experience, please ask senior pigeon breeders, experts and other professional and technical personnel to help, or you can cram for help and look at theoretical knowledge to recharge. It is better for pigeon friends to communicate with each other, but it is better than those who are self-righteous, don't know how to pretend to understand, and use drugs indiscriminately. Haven't we experienced enough such painful lessons? Correctly distinguishing infectious diseases from non-infectious diseases really requires rich theoretical knowledge and a lot of clinical practical experience. Even for the diagnosis of most diseases, doctors still need to make auxiliary diagnosis through pathological anatomy, and can give a clear diagnosis only after obtaining the laboratory test basis.