Anonymised badger trapping records for government and lay vaccinator groups in England

The first dataset is comprised of anonymised badger trapping records for government and lay vaccinator groups in England. This dataset only includes records from groups operating under Natural England licence. In the first dataset, each record gives details of the number of traps set by a given group at a particular location (an active badger sett or other area of badger activity) on a single trapping night.  An anonymised code has been given to each group. Additional fields include organisation type (government or lay vaccinator group), operational year (how many years the group has been active), the number of traps set on a given night and the number of badgers captured (note that this value is not the same as the number of badgers vaccinated as over the course of a two night trapping event, badgers trapped on the first night may be recaptured on the second).

The second dataset is comprised of summarised trapping data for calculation of population size (based on Lincoln Petersen estimation) from which the proportion of the population vaccinated is derived. Trapping data have been summarised for each vaccination group in a given year; a total of 35 rows are included. Fields in this dataset include the anonymised code for each vaccination group, year, the total number of badger vaccinated in that group/year combination and the fields required for calculation of the LP estimator.

Methods
In England, all badger vaccination projects are required to submit records of their activities as a condition of the Natural England licence under which they operate.  These records are held in an SQL database hosted by the Animal and Plant Health Agency (APHA).  The first dataset is derived from 6352 records from groups engaged in badger vaccination between 2010 to 2015.  A record is defined here as a given night of badger trapping in a specific area undertaken by a vaccination group. Reported data include numbers of traps deployed, organisation type, operational year, month and number of badgers trapped.

In the second dataset, as the LP Index is known to be biased by small sample sizes, data are excluded from groups where less than seven marked badgers were caught on all second nights of trapping. We used records from the first and second nights of vaccination operations only (occasionally trapping was extended to a third or fourth night when no badgers were captured on the first two nights).

首个数据集包含英格兰地区面向政府及非专业接种者小组（lay vaccinator group）的匿名化獾诱捕记录，仅包含持有自然英格兰（Natural England）许可证的小组提交的记录。该数据集的每条记录均详细记录了某一小组在单次诱捕夜间，于特定地点（活跃獾穴或其他獾活动区域）布设的陷阱数量。每个小组均分配有匿名代码。附加字段包括机构类型（政府或非专业接种者小组）、运营时长（该小组已活跃的年数）、单次夜间布设的陷阱数量以及捕获的獾数量。需注意：该数值与实际疫苗接种的獾数量并不一致，因为在为期两晚的诱捕活动中，第一晚捕获的獾可能在第二晚被再次捕获。

第二个数据集包含用于种群规模计算（基于林肯-彼得森估计法（Lincoln Petersen estimation））的汇总诱捕数据，由此可推导得到种群疫苗接种比例。该数据集按年度为每个接种小组汇总诱捕数据，共包含35条记录。字段包括各接种小组的匿名代码、年度、该小组/年度组合下的疫苗接种獾总数量，以及林肯-彼得森估计量（LP estimator）计算所需的相关字段。

研究方法
英格兰地区所有獾疫苗接种项目均需提交活动记录，作为其开展活动所依赖的自然英格兰（Natural England）许可证的前置条件。这些记录存储于动植物卫生检疫局（Animal and Plant Health Agency, APHA）托管的结构化查询语言（SQL）数据库中。首个数据集源自2010至2015年间参与獾疫苗接种的小组提交的6352条记录。本文中，一条记录指某一接种小组在特定区域开展的单次夜间獾诱捕活动。上报数据包含陷阱布设数量、机构类型、运营时长、月份以及诱捕的獾总数量。

针对第二个数据集，由于已知林肯-彼得森指数（LP Index）易受小样本量影响而产生偏差，因此将所有第二晚诱捕中捕获标记獾不足7只的小组的数据排除在外。本次研究仅使用疫苗接种活动第一晚和第二晚的记录；若前两晚未捕获任何獾，偶尔会将诱捕延长至第三或第四晚。