男性,30岁,患病4周,以高热为主,曾确诊为伤寒,日前体温开始下降,食欲好转,体力渐增,脾肿大开始回缩,要特别重视( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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