From 1 January until 29 February 2020, it is strongly recommended that a vaccination is given within 6 calendar months and 21 days (but not in any of the 6 preceding days as per rule below) of the competition and/or entry to competition stabling. From 1 March 2020, in order to compete a horse must be vaccinated in accordance with the above rules and MUST also have had a vaccination within 6 calendar months and 21 days (but not in any of the 6 preceding days) of the competition and/or entry to competition stables. No injection should have been given on any of the 6 days before the competition and/or entry to competition stables. For example: if the horse is vaccinated on the Monday, the horse will not be eligible to enter championship stables, or compete until the following Monday. Horses may compete providing that they have had the first two primary injections providing the second vaccination is within 6 calendar months and 21 days (but not in any of the 6 preceding days) of entry to the competition or competition stabling.