Updates

Updated 2/2/2018

  • Based on expert consensus, immunological principles, and practical clinical experience, the Canine Vaccination Task Force updated their recommendations on when NONCORE parenteral vaccines should be administered in a dog > 20 weeks of age who is OVERDUE FOR REVACCINATION.

    These recommendations apply to Bordetella bronchiseptica (parenteral), Leptospira, Borrelia burgdorferi, and Canine Influenza Virus (H3N8 and H3N2).

    • Initial recommendation published on 9/5/2017: If more than 1 yr has elapsed since the previous dose, it is recommended to administer 2 doses 2 to wk apart.

    • Updated recommendation published on 2/3/2018: Sufficient data does not exist to assess the immune response to a single dose of vaccine in dogs that have not received a booster vaccination within 1 year since the previous dose. However, if more than 18 months has elapsed since the previous dose, it is reasonable to administer 2 doses 2 to 4 wk apart.

  • To reflect current expert consensus, immunological principles, and practice clinical experience, the Canine Vaccination Task Force altered the following suggestion in the Frequently Asked Questions section:

    • Initial recommendation (9/5/2017):

      24. MATERNAL ANTIBODY. Can maternally derived antibody (MDA) interfere with active immunization by both modified-live virus (attenuated) and killed (inactivated) vaccines?

      Maternally derived antibody variably interferes with immunization subsequent to both modified-live virus (attenuated) and killed (inactivated) vaccine administration. The ability of MDA to interfere, and the duration of interference, are determined by several factors, including the bitch’s immune status, her willingness to nurse in the first 3 days post-partum, and the amount of colostrum received by the individual pup.2,14

      Young dogs (particularly those less than 12 wk of age) vaccinated with an inactivated vaccine may experience MDA interference with the first dose. In such cases, the priming immune response does not occur. The second dose, therefore, would not immunize.

    • Updated recommendation (2/3/2018): The italicized paragraph above has been removed.

  • The following information has been added to the Frequently Asked Questions on Vaccination Recommendations:

    • 36. SHELTER MEDICINE: Regarding recommendations to “vaccinate at time of intake,” how should dogs > 18 weeks of age be vaccinated who have been adopted but then are returned back to the shelter, one or multiple times?

      It is not necessary to administer a vaccine at the time of entry if a history of adequate vaccination can be confirmed.

  • The following information has been added to the Frequently Asked Questions on Antibody Testing vs Vaccination:

    • 6. FREQUENCY OF TESTING: How often should titer testing for DAP be performed?

      The frequency of antibody testing should be based on clinical judgement, but it is reasonable to perform antibody testing at least as often as the interval for booster vaccination.

Please contact guidelines@aaha.org with questions.