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GB/T 16551-2020: Diagnostic techniques for classical swine fever
Status: Valid GB/T 16551: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 16551-2020 | English | 369 |
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4 days [Need to translate]
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Diagnostic techniques for classical swine fever
| Valid |
GB/T 16551-2020
|
| GB/T 16551-2008 | English | 399 |
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3 days [Need to translate]
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Diagnostic techniques for classical swine fever (hog cholera)
| Obsolete |
GB/T 16551-2008
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| GB 16551-1996 | English | 279 |
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Technical code of quarantine for swine fever
| Obsolete |
GB 16551-1996
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PDF similar to GB/T 16551-2020
Basic data | Standard ID | GB/T 16551-2020 (GB/T16551-2020) | | Description (Translated English) | Diagnostic techniques for classical swine fever | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B41 | | Classification of International Standard | 11.220 | | Word Count Estimation | 20,23 | | Date of Issue | 2020-12-14 | | Date of Implementation | 2020-12-14 | | Older Standard (superseded by this standard) | GB/T 16551-2008 | | Quoted Standard | GB 19489; GB/T 27540; GB/T 34729-2017; GB/T 35906; GB/T 36875; NY/T 541 | | Regulation (derived from) | National Standard Announcement No. 28 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies the clinical symptoms and pathological changes of swine fever, sample collection, preservation, transportation and processing, laboratory pathogenic diagnosis methods and laboratory antibody detection methods, etc. This standard applies to the diagnosis of swine fever in pigs (domestic pigs, wild boars). | GB/T 16551-2020: Diagnostic techniques for classical swine fever---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Swine fever diagnosis technology)
ICS 11:220
B41
National Standards of People's Republic of China
Replace GB/T 16551-2008
Swine fever diagnosis technology
2020-12-14 release
2020-12-14 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Preface Ⅲ
Introduction Ⅳ
1 Scope 1
2 Normative references 1
3 Abbreviations 1
4 Clinical symptoms and pathological changes 2
4:1 Clinical symptoms 2
4:2 Pathological changes 2
4:3 Results judgment 2
5 Collection, storage, transportation and processing of samples 2
5:1 Equipment 2
5:2 Reagent 2
5:3 Sample collection 3
5:4 Storage and transportation 3
5:5 Sample processing 3
6 Laboratory pathogenic diagnosis method 3
6:1 Immunofluorescence antibody test (FAT) 3
6:2 Immunoperoxidase test (IPT) 4
6:3 Isolation and identification of swine fever virus 5
6:4 RT-nPCR detection method of swine fever virus 6
6:5 Real-time fluorescent RT-PCR detection method for swine fever virus 6
7 Laboratory antibody detection methods 6
7:1 Swine fever virus neutralization test 6
7:2 Classical swine fever virus blocking ELISA antibody detection method 9
7:3 Indirect ELISA detection method for swine fever antibodies 9
7:4 Detection method of swine fever virus chemiluminescence antibody 9
8 Comprehensive decision 10
Appendix A (Normative Appendix) Reagent Preparation 11
Appendix B (Normative Appendix) Determination of TCID50 of Classical Swine Fever Virus 14
Appendix C (Normative Appendix) Preparation of Calibrators 15
Foreword
This standard was drafted in accordance with the rules given in GB/T 1:1-2009:
This standard replaces GB/T 16551-2008 "Swine Fever Diagnostic Technology": Compared with GB 16551-2008, the main technical changes are as follows:
--- Modify the "scope" (see Chapter 1, Chapter 1 of the:2008 edition);
--- Added "Normative Reference Documents" (see Chapter 2);
---Added "abbreviations" (see Chapter 3);
--- Revised the "Clinical and Pathological Diagnosis" section and renamed it "Clinical Symptoms and Pathological Changes" (see Chapter 4,:2008 edition
chapter 2);
--- Added "Sample Collection, Storage, Transportation and Processing" section (see Chapter 5);
--- Modified the "Etiological Diagnosis" section and renamed it "Laboratory Etiological Diagnosis Methods" (see Chapter 6, Chapter 3 of the:2008 edition);
--- Deleted the "Rabbit Body Interactive Immunity Test" part (see 3:1 in the:2008 edition);
---Modified the "Immunoenzyme Staining Test" and "Direct Immunofluorescence Antibody Test" and renamed "Immunofluorescence Antibody Test"
(FAT)" and "Immune Peroxidase Test (IPT)" (see 6:1, 6:2, and 3:2, 3:4 of the:2008 edition);
---Modified the "virus isolation and identification test" part, renamed "swine fever virus isolation and identification" (see 6:3,:2008 edition 3:3);
--- Deleted "Swine fever virus reverse transcription polymerase chain reaction (RT-PCR)" (see 3:5 in:2008 edition);
---Added "Swine fever virus RT-nPCR detection method" and "Swine fever virus real-time fluorescent RT-PCR detection method" (see 6:4, 6:5);
---Modified the "serological diagnosis" part and renamed it "laboratory antibody detection method" (see Chapter 7, Chapter 4 of the:2008 edition);
---Modified the "fluorescent antibody virus neutralization test" and renamed it "swine fever virus neutralization test" (see 7:1,:2008 edition
4:1);
--- Deleted "Swine Fever monoclonal antibody enzyme-linked immunosorbent assay" (see 4:2 in the:2008 edition);
---Added "swine fever virus blocking ELISA antibody detection method", "swine fever antibody indirect ELISA detection method" and "swine fever virus
Chemiluminescence antibody detection method” (see 7:2, 7:3, 7:4):
This standard was proposed by the Ministry of Agriculture and Rural Affairs of the People's Republic of China:
This standard is under the jurisdiction of the National Animal Epidemic Prevention Standardization Technical Committee (SAC/TC181):
This standard was drafted: China Veterinary Drug Supervision Institute:
The main drafters of this standard: Wang Qin, Zhao Qizu, Xu Lu, Wang Zaishi, Zhang Qianyi, Xia Yingju, Fan Xuezheng, Zou Xingqi, Zhu Yuanyuan, Li Cui,
Qiu Huishen, Zhao Yun, Xu Chang:
The previous versions of the standard replaced by this standard are as follows:
---GB/T 16551-2008:
Introduction
Swine fever (Classicalswinefever, CSF) is caused by swine fever virus (Classicalswinefevervirus, CSFV) infection
A highly contact fatal infectious disease that can cause huge economic losses and social impact: Recognized by the World Organization for Animal Health (OIE)
Listed as a disease that must be reported, my country stipulates that CSF is a type of animal disease:
Pigs, including wild boars, are the only natural host of this disease: Diseased pigs and infected pigs are the source of infection of this disease: Pigs of different ages, genders, and breeds are all
Susceptibility, can occur all year round: Infected pigs can excrete toxins through secretions and excrement before they become ill, and continue the entire course of the disease: With infected pigs straight
Contact is the main mode of transmission of the disease: The virus can also be transmitted indirectly through semen, embryos, pork, and swill: Humans and other animals such as
Rodents, insects, and utensils can all become important media:
CSFV is a member of the Flaviviridae (Flaviviridae) Pestivirus: It has only 1 serotype and 3 genotypes:
There are 10 genotypes, and there are good antigen cross-reactions among different genotypes: In recent years, due to clinical persistent infection of CSFV
The chronic and recessive forms of infection without typical clinical symptoms and pathological changes caused by the phenomenon, as well as the phenomenon of mixed infection of multiple diseases, the clinical symptoms of CSF
Bed diagnosis and pathological diagnosis can only be used as the basis for preliminary diagnosis: Laboratory testing of CSF pathogens is the main method to determine viral infection:
Law requires diagnostic techniques and standards to be more specific and sensitive: Due to the need for diagnosis and the development of diagnostic technology, GB/T 16551-2008 has
After failing to meet the requirements: In view of the common characteristics of CSF infection with low viral load and short viremia time, it is most suitable for the examination of live animals:
The test sample is tonsils first, followed by anticoagulated whole blood; if it is a dead animal, tonsils, spleen, kidney, pancreas, ileum, ileocecal valve, and
Mesenteric lymph nodes and submandibular lymph nodes and other organs with high toxic content are tested: Using CSFV antigen immunoassay [immunofluorescence anti
Body test (Fluorescent antibody test, FAT)/Immunoperoxidase test (Immunoperoxidase test, IPT)] can be detected
Viral antigens in infected tissues and cells are used for diagnosis; if the result is suspicious or the sample is insufficient, it can be confirmed by nucleic acid detection technology:
If the sample size is large, the real-time fluorescent RT-PCR detection method of classical swine fever virus can be used for preliminary screening, and the positive ones use classical swine fever virus RT-nPCR
Detection methods and sequence determinations are used for diagnosis and genotyping; samples that cannot be diagnosed above are diagnosed with classic CSFV isolation techniques:
The isolated virus can be used for further research: The above three types of methods are all recommended by OIE:
At present, the implementation of comprehensive immunization with CSF vaccine is an important means for our national defense to control CSF: CSFV antibody detection is mainly used for CSF vaccine
Evaluation of immunization effects, and for some countries and regions that do not implement immunization CSF vaccine, CSF antibody testing can be used as an unimmunized pig
The basis for the diagnosis of CSF infection in pigs with pestilence vaccine: In my country, the ELISA method has become a method of monitoring the CSFV antibody protection level and evaluation after immunization:
The most important means to determine the immune effect of pigs, according to different testing purposes, different methods can be selected: For my country’s CSF vaccine
In the large-scale census carried out after the immunization, the indirect ELISA antibody detection method can more truly reflect the level of neutralizing antibodies, which is
Program formulation and antibody level monitoring provide reliable data support; blocking ELISA antibody detection method can be used for introduction due to its strong specificity
The detection of breeding pigs; the chemiluminescence antibody detection method is a new enzyme-linked immunoassay method developed in recent years:
Objects increase the sensitivity of detection, while increasing the linear range of detection: The CSFV chemiluminescent antibody detection method in this standard adopts
CSFV antibody calibrator, and draw a calibration curve in the test, can make the antibody test results relatively quantitative: In addition, use this method to
Line detection can greatly shorten the detection time and is suitable for field promotion: The final antibody confirmation can use the "gold standard" method for virus neutralization
Test (Virusneutralizationtest, VNT): Both the ELISA method and the VNT method are recommended by OIE and are also international
Trade designated test:
This standard involves 5 kinds of CSF pathogens and 4 kinds of CSFV antibody laboratory detection methods, which can be used for CSF pathogens and antibodies:
Qualitative testing: Users can choose the appropriate method according to their own experimental conditions, ability level and the actual situation of the sample to be tested:
The issuing agency of this document draws attention to the fact that when the declaration conforms to this document, it may involve 7:2 and 7:3 and CSFVE2 protein expression and purification
Use of related patents:
The issuing agency of this document has no position on the authenticity, validity and scope of the patent:
The patent holder has assured the issuing organization of this document that he is willing to work with any applicant under reasonable and non-discriminatory terms and conditions:
Negotiations on patent licensing: The statement of the patent holder has been filed with the issuing agency of this document: Relevant information can be through the following
Contact information:
Name of patent holder: China Veterinary Drug Supervision Institute:
Address: No: 8 South Street, Zhongguancun, Beijing:
Please note that in addition to the above patents, certain contents of this document may still involve patents: The issuing agency of this document is not responsible for identifying these
Li’s responsibility:
Swine fever diagnosis technology
1 Scope
This standard specifies the clinical symptoms and pathological changes of swine fever, sample collection, preservation, transportation and processing, and laboratory pathogenic diagnosis methods
And laboratory antibody detection methods:
This standard applies to the diagnosis of swine fever in pigs (domestic pigs, wild boars):
2 Normative references
The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this
file: For undated references, the latest version (including all amendments) applies to this document:
GB 19489 Laboratory Biosafety General Requirements
GB/T 27540 Real-time fluorescent RT-PCR detection method for swine fever virus
GB/T 34729-2017 Swine fever virus blocking ELISA antibody detection method
GB/T 35906 Indirect ELISA detection method for swine fever antibodies
GB/T 36875 RT-nPCR detection method for swine fever virus
NY/T 541 Technical Specification for Collection, Storage and Transportation of Veterinary Diagnostic Samples
3 Abbreviations
The following abbreviations apply to this document:
CSF: Classicalswinefever
CSFV: Classicalswinefevervirus
EDTA: Ethylenediaminetetraacetic acid
ELISA: Enzymelinked immunosorbent assay (Enzymelinkedimmunosorbentassay)
FAT: Immunofluorescent antibody test (Fluorescentantibodytest)
FITC: Fluoresceinisothiocyanate
HRP: Horseradish peroxidase (Horseradishperoxidase)
IPT: Immunoperoxidase test (Immunoperoxidasetest)
MEM: Basic Eagle's medium (Minimumeagle'smedium)
NCU: National clinical unit (Nationalclinicalunit)
NIF: Neutralization-immunofluorescence
NPLA: Peroxidase-linked neutralization test (Neutralizationperoxidase-linked antibody)
PBS: Phosphate buffered saline (Phosphatebufferedsaline)
PK-15: Porcine kidney passage cell line (Pigkidney-15celline)
RT-nPCR: Nested PCR technology (Reversetranscriptionnestpolymerasechainreaction)
RT-PCR: Reverse transcription polymerase chain reaction (Reversetranscription polymerase chain reaction)
TCID50: half of tissue infection dose (50% tissuecultureinfectivedose)
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