How they work?

The vaccine introduces antigens (harmless parts of the pathogen) into the body, causing the immune system to recognize them as foreign and produce antibodies to target them. After vaccination, the body retains a memory of the pathogen, allowing for a faster and more effective immune response if exposed to the actual disease in the future.

Considerations?

When considering each vaccine, a risk-benefit analysis should be done. Vaccination in dogs may cause mild reactions such as swelling or soreness at the injection site, mild fever, lethargy, or reduced appetite, which typically resolve within 24–48 hours. In some cases, allergic reactions like hives, facial swelling, itchiness, redness, vomiting, or diarrhea can occur.

Risks associated with vaccines?

Rare but serious risks include anaphylaxis, a severe allergic reaction requiring immediate veterinary attention, and immune-mediated conditions like hemolytic anemia or polyarthritis. Some dogs may develop small lumps at the injection site, which usually resolve, while vaccine-associated sarcomas are extremely rare. Factors like age, health, breed sensitivity, and over-vaccination can influence the likelihood of adverse effects, underscoring the importance of tailored vaccination schedules.