GB16883-2022
Dertermination for natural plague foci and plague epizootics
鼠疫自然疫源地及动物鼠疫流行判定
GB 16883-2022 is a current mandatory Chinese national standard for Dertermination for natural plague foci and plague epizootics. It appears in the Food compliance cluster with a product safety focus and has an implementation date of Apr 1, 2023.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard is applicable to the determination of newly discovered natural plague foci, the identification of ongoing animal plague epizootics, and the assessment of epizootic intensity within China. It is designed for use by public health authorities, epidemiological researchers, and quarantine facilities monitoring wild rodent populations and their parasitic vectors. It does not apply to direct clinical diagnosis of human plague, which is covered by the referenced standard WS 279-2008.
Technical requirements
The standard outlines the criteria for identifying a natural plague focus based on the presence of Yersinia pestis in local wild rodents or their vectors. It defines the requirements for identifying principal reservoirs (rodents) and principal vectors (fleas) that sustain the disease in specific geographic ecosystems. Once a focus is identified, it must be classified according to biological, genetic, and geographical characteristics. For determining active animal plague epizootics, the standard specifies two main pathways: direct isolation of Yersinia pestis from animal specimens, or a dual-positive result for specific genes and antigens. Alternatively, epizootics can be confirmed through continuous serological monitoring detecting plague F1 antibodies in principal hosts or dogs, with specific positive rate and titer thresholds varying by focus type. Additionally, the standard introduces an epizootic intensity assessment framework. Intensity is categorized into low, medium, and high levels based on the geographic spread of the outbreak across county-level administrative divisions and natural village settlements.
Testing methods
The standard mandates specific bacteriological and serological testing methods. Specimen collection procedures are detailed for animal tissues, blood, and vector insects (such as fleas). Testing includes microscopic examination, isolation culture, and phage lysis tests to definitively identify Yersinia pestis. Furthermore, virulence tests using animal inoculation (requiring Biosafety Level 3 laboratory conditions) are specified for confirming strain pathogenicity.
FAQs
What products and scenarios are regulated under GB 16883-2022?
This standard applies to the determination of newly discovered natural plague foci, the identification of ongoing plague epizootics (animal plague), and the assessment of epizootic intensity within China. It is intended for use by public health authorities and epidemiological researchers.
Are there any significant updates from the previous GB 16883-1997 version?
Yes, this version replaces GB 16883-1997. Key updates include revised terminology, the addition of criteria allowing dual-positive detection of specific Yersinia pestis genes and antigens to confirm an active epizootic, and the inclusion of epizootic intensity assessment. It also adds a reference table for Chinese plague foci types.
How does GB 16883-2022 differ from international plague surveillance standards?
While international standards provide general diagnostic guidelines, GB 16883-2022 is highly specific to the Chinese epidemiological context. It includes tailored antibody prevalence thresholds for various regional host species, such as marmots and specific rodents, which are critical for accurate local surveillance.
The summary above provides a high-level overview of GB 16883-2022. To ensure complete compliance for your epidemiological surveillance or research programs entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 16883-2022 today to access all detailed parameters, regional classification tables, and testing procedures.
Applicability hints
- Type
- Health and hygiene
- CCS
- C 59
- ICS
- 11.020
- Competent department
- National Disease Control and Prevention Administration
- Technical committee
- National Disease Control and Prevention Administration
Relationships
Replaces:GB 16883-1997