Final answer:
The Task Force recommends monitoring the vaccination site for swelling or lumps using the '3-2-1' rule, and considering a biopsy if certain criteria are met.
Step-by-step explanation:
The 3-2-1 Rule for Monitoring Vaccination Site
The Task Force recommends that veterinarians and owners monitor the vaccination site for swelling or lumps using the '3-2-1' rule. This rule suggests that if there is any swelling or lumps at the vaccination site, a biopsy should be considered if it meets the following criteria:
- 3: If the swelling or lump lasts for more than 3 weeks.
- 2: If the swelling or lump is at least 2 centimeters in size.
- 1: If the swelling or lump is increasing in size.
If any of these criteria are met, it is recommended to perform a biopsy to further investigate the mass.