In the absence of satisfactory combined vaccine testing methods available for application, new testing methods should be developed as soon as possible to determine the content or potency of each component.
In the absence of satisfactory joint vaccine testing methods to be put into use, new testing methods should be developed as soon as possible to determine the content or effectiveness of each of the parts.
At present, there is no satisfactory detection method for combined vaccine, so new detection method should be developed as soon as possible to determine the content or potency of each component.<br>