GB/T 27772-2025Criteria for vector density control — Flies (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document replaces GB/T 27772-2011 "Density control levels of vector flies". Compared with GB/T 27772-2011, In addition to structural adjustments and editorial changes, the main technical changes are as follows.

a) In the Terms and Definitions, the definition of flies was deleted (see 3.1 of the 2011 edition), and the positive rate of flies in rooms was changed to indoor adult flies.

Positive rate (see 3.3, 3.4 of the 2011 edition), add fly breeding path index (see 3.6), change fly prevention facilities to fly prevention facilities Qualification rate (see 3.7, 3.2 of the 2011 edition);

b) Added the inspection method for indoor adult flies and fly breeding areas (see 4.1, 4.2), and changed the inspection method for fly prevention facilities (see 4.3, 4.2 of the 2011 edition);

c) Changed the index values of the three levels of indoor adult fly density control level A, B, and C (see 5.1.2, 5.1.2 of the 2011 edition); added A, B, C. The third-level outdoor fly breeding path index value replaces the outdoor fly breeding rate (see 5.1.4, 5.1.3 of the 2011 edition);

Changed the unit fly density control level (see 5.2, Appendix A of the 2011 edition);

d) The sampling quantity requirements have been changed (see 6.2, 6.2 of the 2011 edition);

e) The sampling requirements for evaluating the control level of fly density in cities and towns have been changed (see Appendix A, Appendix B of the 2011 edition), and fly control has been added.

Facility requirements (see Appendix B).

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document is proposed and coordinated by the National Health Commission of the People's Republic of China.

This document was drafted by: Shanghai Center for Disease Control and Prevention, Beijing Center for Disease Control and Prevention, Zhejiang Center for Disease Control and Prevention, Chongqing Center for Disease Control and Prevention, Military Medical Research Institute of the Chinese Academy of Military Sciences, Infectious Diseases of Chinese Center for Disease Control and Prevention Shanghai Hongkou District Center for Disease Control and Prevention, Shanghai Huangpu District Center for Disease Control and Prevention, Shanghai Songjiang District Center for Disease Control and Prevention Prevention and control center.

The main drafters of this document are: Leng Peien, Liu Hongxia, Zeng Xiaopeng, Gong Zhenyu, Ji Hengqing, Zhao Tongyan, Wu Haixia, Wang Fei, Gao Qiang, and Lv Xihong.

The previous versions of this document and the documents it replaces are as follows.

— First published in 2011 as GB/T 27772-2011;

— This is the first revision.

Density control level of vectors Flies

1 Scope

This document specifies the control level, sampling requirements and comprehensive evaluation of indoor adult flies, fly breeding areas and fly control facilities in towns and units, and describes A method for checking the fly density control level was developed.

This document is applicable to the evaluation of fly density control levels in towns and units.

2 Normative references

GB/T 23796

3 Terms and definitions

The following terms and definitions apply to this document.