# The Plant Health (EU Exit) Regulations 2019, Paragraph 9


Where the infection is limited to one particular sub-species of the plant pest which has been identified by one positive molecular test carried out in line with international standards, the demarcation may be based on that sub-species alone.

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Source: https://www.legislation.gov.uk/ukdsi/2019/9780111177563/schedule/15/paragraph/9 (the official version)
Page: https://openlegislation.uk/draft-plant-health-eu-exit-regulations-2019/schedule-15/paragraph-9
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.