WS 470-2015 in English
VALIDTechnical standard for management of trichinellosis outbreak
- Issued on:2015-04-09
- Implemented on:2015-09-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$330.00
| Standard No: | WS 470-2015 |
| Document status: | VALID |
| Title in English: | Technical standard for management of trichinellosis outbreak |
| Title in Chinese: | 旋毛虫病爆发处理技术规范 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2015-04-09 |
| Implemented on: | 2015-09-01 |
| Professional Classification: | WS-Hygiene |
| Related Keywords: | technical standard
trichinellosis outbreak standard evolution outbreak introduction analysis technical implementation points |
| Related Topics: | astm 470
cable 470 HPLC 2015 cns 470 jg/t 470-2015 ws/t67 Trichinella detection Black gum insect treatment WS 1 outbreak nf 470 Trichinella spiralis ws2005 ws 505 trichinosis ws ws/t Principle of spin technology new cases ws 496 |
本标准规定了旋毛虫病暴发的流行病学调查和处理。
本标准适用于医疗机构和疾病预防控制机构对旋毛虫病暴发的处置。
Introduction
Analysis of the core content of the standard
As a mandatory health industry norm, this standard clarifies the definition threshold of a trichinellosis outbreak: 5 or more epidemiologically related cases occurring in a local area within 30 days. Technical points cover:
| Disposal phase | Core requirements | Reference standards |
|---|---|---|
| Outbreak verification | Case epidemiological correlation analysis | WS 369-2012 |
| On-site investigation | Full-chain traceability of suspicious meat | GB 16548-2006 |
| Laboratory testing | Serological + etiological double verification | Appendix A |
Key technical implementation points
1. Comparison of meat inspection methods
Plate microscopy method is applicable to fresh meat samples. Attention should be paid to the following:
- Different sampling sites are used for different animals (diaphragm for pigs and front leg muscle for wild boars)
- Frozen meat needs to be thawed and treated with methylene blue or hydrochloric acid to improve the detection rate
Artificial digestion methodKey parameters:
- Digestive fluid ratio: 0.7% hydrochloric acid + 1% pepsin
- Temperature control: constant temperature stirring at 45±2℃ for 2 hours
Background of standard evolution
This standard was developed based on the experience of multiple foodborne trichinellosis outbreaks in Yunnan, Henan and other places in my country from 2005 to 2013. The main technical breakthroughs include:
- Quantitative indicators for the first clear outbreak definition
- Standardized operating procedures for artificial digestion
- Establish a preventive dosing regimen for exposed populations
Implementation recommendations
Key points for implementation by medical institutions
- Confirmed patients should immediately start albendazole treatment (20 mg/kg/d divided into 2 times)
- Severe patients require combined use of glucocorticoids to control inflammatory response
Workflow of disease control agencies
- Exposed population screening should be completed within 48 hours after the outbreak is confirmed
- Tracing of diseased animal meat needs to be implemented in conjunction with agricultural departments
- Health education should focus on the raw food habits of ethnic minority areas
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