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作者根据副伤寒在发达国家的爆发和发展中国家的地方性流行情况,认为迫切需要发展有效的副伤寒菌苗加以控制。
Based on the outbreak of paratyphoid fever in developed countries and the endemic conditions in developing countries, the author believes that there is an urgent need to develop effective paratyphoid vaccine to be controlled.