TABLE 2.

Changes in mite abundance and average DWV titre over time. The average DWV titre shown is per apiary, rather than per colony, as these were analysed in pools. The change in mites is calculated as a percentage change from in the annual average (compared to the 2017 pre‐treatment). All colonies which recorded zero mites in a drop were excluded from analysis.

Year	Total colonies	Total apiaries	Average DWV per apiary (GE/μg RNA)	Total mites	Average per colony	Change in mites from 2017
2017	43	17	8 × 105	29,371	683.0	/
2018	39	16	6 × 103	8806	225.8	67% decrease
2019	61	19	4 × 104	18,506	303.3	55.6% decrease