Hib对许多价格较低廉但有效的抗生素的耐药性造成日益增长的关注，并为扩大疫苗覆盖面提供了额外的推动力。
Resistance of Hib to several of the more inexpensive but effective antibiotics is a growing cause of concern and provides additional impetus for expanding vaccine coverage.
Hib对许多价格较低廉但有效的抗生素的耐药性造成日益增长的关注，并为扩大疫苗覆盖面提供了额外的推动力。
Resistance of Hib to several of the more inexpensive but effective antibiotics is a growing cause of concern and provides additional impetus for expanding vaccine coverage.
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