question: What is the downfall of using immunization against the pathogens that cause disease ?
answer: it does require targeting certain pathogens for vaccination
turker_answer: the downfall of using immunization against the pathogens that cause disease is that it does require targeting certain pathogens for vaccination .
rule-based: The downfall of using immunization against the pathogens that cause disease is it does require targeting certain pathogens for vaccination .