We assessed the acute toxicity of CJ-50003, a second Japanese encepalitis (JE) vaccine developed by Cheil-Jedang corporation, in Sprague-Dawley (SD) rats and beagle dogs. CJ-50003 was orally and intramuscularly administered up to maximum dose of 160 ...
We assessed the acute toxicity of CJ-50003, a second Japanese encepalitis (JE) vaccine developed by Cheil-Jedang corporation, in Sprague-Dawley (SD) rats and beagle dogs. CJ-50003 was orally and intramuscularly administered up to maximum dose of 160 ㎍/kg, 1,000 times as much as the expected clinical dose, in SD rats and was intramuscularly administered up to 50 ㎍/kg, 300 times as much as the expected clinical dose, in beagle dogs. In these experiments, there were no death and clinical changes which were related to CJ-50003. In addition, there were no significant changes between control and treated groups in body weights and autopsy findings. In conclusion, LD50 of CJ-50003 is over 160 ㎍/ kg in SD rats, and over 50 ㎍/kg in beagle dogs.