Mass Vaccination Campaign Against Rabies: Are Dogs Correctly Protected? The Peruvian Experience

in addition, the number of animal rabies cases has declined to only three from a previous mean of 292 cases per year since 1980. A serologic survey was also done to determine the immune response among randomly selected vaccinated dogs, with titers determined 3, 6, 9, and 12 months after vaccination. Twelve months after vaccination, 97% of the dogs had a rabies neutralizing antibody titer of >0.5 IU/mL, and 87% had a titer of >1.0 IU/mL. Thus, this tissue culture rabies vaccine given under field conditions induced antibodies that lasted for at least 1 year in 97%o of vaccinated dogs.