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The survival rates of chicks infected by different concentrrations of A. baumannii Y03 were detected using animal infection experiments. Seven-day-old chicks in the test groups were intramuscularly injected with 2.0 × 1010, 1.0 × 1010, 1.0 × 109, 1.0 × 108, and 1.0 × 107 CFU of MDR A. baumannii Y03. Seven-day-old chicks in the control groups were intramuscularly injected with PBS. Survival was monitored until 7 days post-infection
