| Vaccine    from | 
        ANTIBODY TITER IN THE MICE (IU/mL) | 
       
      
        | 1 | 
        2 | 
        3 | 
        4 | 
        5 | 
        6 | 
        7 | 
        Mean | 
        ±SEM | 
       
      
        | Control  | 
        0.103 | 
        0.103 | 
        0.104 | 
        0.103 | 
        0.104 | 
        0.009 | 
        0.007 | 
        0.0761 | 
        ± 0.0176 | 
       
      
        | Enugu/Ebonyi | 
        0.165 | 
        0.177 | 
        0.174 | 
        0.193 | 
        0.165 | 
        0.174 | 
        0.191 | 
        0.1770  | 
        ± 0.0042 | 
       
      
        | Imo State | 
        0.180 | 
        0.196 | 
        0.163 | 
        0.164 | 
        0.161 | 
        0.175 | 
        0.169 | 
        0.1726 | 
        ± 0.0047 | 
       
      
        | Anambra | 
        0.165 | 
        0.160 | 
        0.172 | 
        0.195 | 
        0.168 | 
        0.155 | 
        0.165 | 
        0.1686 | 
        ± 0.0049 | 
       
      
        | Abia | 
        0.173 | 
        0.181 | 
        0.172 | 
        0.170 | 
        0.175 | 
        0.184 | 
        0.176 | 
        0.1759 | 
        ± 0.0019 | 
       
     
    Note: Control was the DPT stored at 37°C for 12 months. |