Dogs >20 weeks of age

Applies to:

- Dogs older than 20 wk of age that are presented for vaccination that:
  - Have no prior vaccination history
  - Have an incomplete vaccination history
  - Have a history of inappropriate prior vaccinations
  - Are overdue for a scheduled booster dose

Click on a vaccine below for the recommendations:

No History, Incomplete History, or History of a Inappropriate Prior Vaccination	Administer a single dose. Revaccinate every 3 years (or longer). NOTE: As an alternative to administering a vaccine, a “positive” antibody test result may be used to verify a protective response to vaccination. Click here for more information on antibody testing.
Overdue for Revaccination	Administer a single dose regardless of the time elapsed since the previous dose was administered. Revaccinate every 3 years (or longer). NOTE: As an alternative to administering a vaccine, a “positive” antibody test result may be used to verify a protective response to vaccination. Click here for more information on antibody testing.

No History, Incomplete History, Or History of Inappropriate Prior Vaccination	Administer a single dose. In the absence of documentation of prior rabies vaccination, a second dose should be scheduled within 1 yr, regardless of the vaccine type (1-Yr or 3-Yr labeled rabies vaccine) administered initially. State/ local/ provincial statutes apply. For state-specific information, click here.
Overdue for Revaccination	Administer a single dose regardless of the time elapsed since the previous dose was administered. If evidence of prior rabies vaccination is available, administer a single dose. Depending on state/local regulations, revaccination may be required within 1 yr or within 3 yr State/ local/ provincial statutes apply. For state-specific information, click here.

No History, Incomplete History, Or History of Inappropriate Prior Vaccination	Administer a single dose.
Overdue for Revaccination	Administer a single dose regardless of the time elapsed since the last dose was administered.

No History, Incomplete History, Or History of Inappropriate Prior Vaccination	Administer a single dose.
Overdue for Revaccination	Administer a single dose regardless of the time elapsed since the last dose was administered.

No History, Incomplete History, Or History of Inappropriate Prior Vaccination	Administer 2 doses 2 to 4 wk apart. (NOTE: 2 consecutive doses are required to immunize.)
Overdue for Revaccination	Sufficient data do not exist to assess the immune memory response to a single dose of vaccine in dogs that have not received a booster vaccination within 1 year since the previous dose. The decision whether to administer a single booster dose or 2 doses 2 to 4 wk apart should be made with regional and lifestyle risks in mind.

No History, Incomplete History, Or History of Inappropriate Prior Vaccination	Administer 2 doses 2 to 4 wk apart. (NOTE: 2 consecutive doses are required to immunize.)
Overdue for Revaccination	Sufficient data do not exist to assess the immune memory response to a single dose of vaccine in dogs that have not received a booster vaccination within 1 year since the previous dose. The decision whether to administer a single booster dose or 2 doses 2 to 4 wk apart should be made with regional and lifestyle risks in mind.

No History, Incomplete History, Or History of Inappropriate Prior Vaccination	Administer 2 doses 2 to 4 wk apart. (NOTE: 2 consecutive doses are required to immunize.)
Overdue for Revaccination	Sufficient data do not exist to assess the immune memory response to a single dose of vaccine in dogs that have not received a booster vaccination within 1 year since the previous dose. The decision whether to administer a single booster dose or 2 doses 2 to 4 wk apart should be made with regional and lifestyle risks in mind.

No History, Incomplete History, Or History of Inappropriate Prior Vaccination	Administer 2 doses 2 to 4 wk apart. (NOTE: 2 consecutive doses are required to immunize.)
Overdue for Revaccination	Sufficient data do not exist to assess the immune memory response to a single dose of vaccine in dogs that have not received a booster vaccination within 1 year since the previous dose. The decision whether to administer a single booster dose or 2 doses 2 to 4 wk apart should be made with regional and lifestyle risks in mind.

Abbreviations

+ = “combined with” the vaccine that follows.
± = “with or without” the vaccine(s) that follow.
* The recommended MAXIMUM interval between doses (during the initial series) is 6 wk. Dogs exceeding 6 wk between doses during the initial series should complete the initial series in accordance with recommendations outlined in this column.
CAV, canine adenovirus-2;
CDV, canine distemper virus;
CPiV, canine parainfluenza virus;
CPV, canine parvovirus;
MLV, modified-live virus or attenuated.